
High School Challenge
Week Ending 12-5-99

Congratulations to Erin Corwin from Valley City High School in Valley
City, ND. Erin
wins the Casio CFX-9850G Color Graphing
calculator.

The Ladder Slid
For this problem, assume the ground is horizontal and the wall is
vertical. A 25 foot ladder is placed against the vertical wall of a
building. The foot of the ladder is 7 feet from the base of the wall. If
the top of the ladder slides down 4 feet on the wall, how far out will the
base of the ladder slide?
Correct Solutions:
- Brendon Hansen. Newport Harbor HS, Newport Beach, CA
- Sophy Zheng. Oak Park & River Forest HS, Oak Park, IL
- Eric Hoke. Wayland HS, Wayland, MA
- Bill Yang. Cariboo Hill SS, Burnaby, BC, Canada
- Chris Ostendorf. Sauk Centre HS, Sauk Centre, MN
- Sorin Ionescu. John Abbott College, Montreal, Canada
- Linda Farmer. Dresden HS, Dresden, TN
- Ruopeng Zhu. Jackson Academy, Jackson, MS
- John Hansen. Lejeune HS, Camp Lejeune, NC
- Eric Lehman. Mayville HS, Mayville, WI
- Philip Choi. Tom Baines JHS, Calgary, Ableta, Canada
- Jan Nordbotten. Cathedral School, Bergen, Norway
- Mark Biondi. Merritt Island HS, Merritt Island, FL
- Marc Harper. Lake Mary HS, Lake Mary, FL
- Jason Juang. Sycamore JHS, Cincinnati, OH
- David Held. Miami Sunset HS, Miami, FL
- Lisa Schechner. Manorhaven ES, Port Washington, NY
- Michael Guzik. Guzik Learning Center, San Diego, CA
- Jeffrey Mo. University ES, Calgary, AB, Canada
- Laura Pelischek. Fox Valley Lutheran HS, Appleton, WI
- Miroslav Rakic. Grover Cleveland HS, Buffalo, NY
- Xing Yun Zhi. George Washington HS, San Francisco, CA
- Dragos Ilas. Inman MS, Atlanta, GA
- Ileana Ilas. Inman MS, Atlanta, GA
- Maiyuran Arumugam. James Ruse AHS, Carlingford, NSW, Australia
- Orlando Carroll. Oviedo HS, Oviedo, FL
- Ryan Foster. Bishop Moore HS, Orlando, FL
- Miling Yan. Claremont HS, Claremont, CA
- Chris Mann. James Ruse AHS, Carlingford, NSW, Australia
- Andrew Kopek. Chagrin Falls MS, Chagrin Falls, OH
- Mike Kopek. Chagrin Falls MS, Chagrin Falls, OH
- Michael Moyer. The Way Home School, Carlisle, PA
- Isha Mehta. Jai Hind College, Bombay India
- Heather Spotts. Vista HS, Vista, CA
- Alex Nikulin. Perspective School, Zaporozhye, Ukraine
- Andrey Somsonov. Perspective School, Zaporozhye, Ukraine
- Evgen Nikulin. Perspective School, Zaporozhye, Ukraine
- Yuchen Mao. Little Oak MS, Slidell, LA
- Ben Wegenhart. Madeira JHS, Cincinnati, OH
- Tiffany White. Jackson Memorial HS, Jackson, NJ
- Sean Ervin. Jackson Memorial HS, Jackson, NJ
- Lee Colbert. Jackson Memorial HS, Jackson, NJ
- Jeff McKenna. Jackson Memorial HS, Jackson, NJ
- Laura Steffero. Jackson Memorial HS, Jackson, NJ
- John Kisty. Jackson Memorial HS, Jackson, NJ
- Ryan Ostrowski. Jackson Memorial HS, Jackson, NJ
- Jason Kennedy. Jackson Memorial HS, Jackson, NJ
- Andrew Campbell. Madeira JHS, Cincinnati, OH
- Ryan Slef. MAdeira JHS, Cincinnati, OH
- Andrew Taft. Gibbons MS, Westborough, MA
- Alex Schwendner. Austin Area Homeschoolers, Austin, TX
- Mathieu Bedirian. Lester B Pearson, Gloucester, ON, Canada
- Shu Duan. William Lyon Mackenzie CI, Toronto, ON, Canada
- Daniel Yu. Randolph MS, Randolph, NJ
- Charles Weigel. Napoleon HS, Napoleon, ND
- Chris Walker. Merritt Island HS, Merritt Island, FL
- Chad Moorer. Merritt Island HS, Merritt Island, FL
- Sara Hawks. Merritt Island HS, Merritt Island, FL
- Brian Hollowell. Merritt Island HS, Merritt Island, FL
- Mike Heitman. Merritt Island HS, Merritt Island, FL
- Jeremy Shull. Conwell-Egan Catholic HS, Fairless Hills, PA
- Jaime McKercher. Warren Central JHS, Vicksburg, MS
- Eve Burstein. The Robert C. Parker School, North Greenbush, NY
- Kyle Bentfield. Sauk Centre HS, Sauk Centre, MN
- Marc Lamoureux. Lester B. Pearson HS, Gloucester, ON, Canada
- Michael Chabunya. Lester B. Pearson HS, Gloucester, ON, Canada
- Laura Zadro. Lester B. Pearson HS, Gloucester, ON, Canada
- Eric Pahl. Northland Lutheran HS, Mosinee, WI
- Patrick Chappell. Brookstone HS, Columbus, GA
- Patrick Chan. Lester B. Pearson HS, Gloucester, ON, Canada
- Cory Fletcher. Lester B. Pearson HS, Gloucester, ON, Canada
- Rafael Louback Ramos. Lester B. Pearson HS, Gloucester, ON, Canada
- Tiffany Chao. Seaquam SS, Delta, BC, Canada
- Tom Macie. Home School, Oconomowoc, WI
- Steve Balamut. Sauk Centre HS, Sauk Centre, MN
- Elaine Hart. Mount Rainier HS, Des Moines, WA
- Ahsan Aziz. Lester B. Pearson HS, Gloucester, ON, Canada
- Charles Scarborough. Brookstone HS, Columbus, GA
- Rola Manassa. Lester B. Pearson, Gloucester, ON, Canada
- Tony Polster. Bishop Moore HS, Orlando, FL
- Bryan McKenzie. Lester B. Pearson HS, Gloucester, ON, Canada
- Neil Desai. Brookstone HS, Columbus, GA
- Shih-Fan Yeh. Burlingame HS, Burlingame, CA
- Andy Semon. Clearwater HS, Clearwater, FL
- Dan McMicken. Brookstone HS, Columbus, GA
- Nirav Desai. Brookstone HS, Columbus, GA
- Xuan Wu. John W. North HS, Riverside, CA
- Dan Twaddell. Chagrin Falls MS, Chagrin Falls, OH
- Daniel Fletcher. Newport Harbor HS, Newport Beach, CA
- Nate Ince. Homeschooled, Arnold, MO
- Jeremy Stensland. Valley City HS, Valley City, ND
- Laura Harris. Valley City HS, Valley City, ND
- Matt Ince. Homeschooled, Arnold, MO
- Jesse Dovick. Hugh McRoberts SS, Richmond, BC, Canada
- Emily Koestner. Newport Harbor HS, Newport Beach, CA
- Grace Cheung. South Pasadena MS, South Pasadena, CA
- Dushy Arumugam. James Ruse AHS, Sydney, Australia
- Allan Ling Xiang Ning. Tao Nan School, Singapore
- Fok Chi Kwong. Yuen Long Merchants Association SS, Hong Kong
- Wesley Spencer See. Chiang Kai Shek College, Manila, Philippines
- Lauren Koster. Cold Spring Harbor HS, Cold Spring Harbor, NY
- Cory King. Puxico HS, Puxico, MO
- Tony Dumais. Presque Isle HS, Presque Isle, ME
- Aaron Keirstead. Presque Isle HS, Presque Isle, ME
- Mike Seitz. Presque Isle HS, Presque Isle, ME
- Derek Chu. McRoberts SS, Vancouver, BC, Canada
- Joo-Won Ahn. Hawaii Preparatory Academy, Kamuela, HI
- Jeff Yang. Hawaii Preparatory Academy, Kamuela, HI
- Tasha Turko. McCreary School, McCreary, MB, Canada
- Chris Brown. Hillsboro HS, Hillsboro, OH
- Andrey Mamontov. Reedsburg HS, Reedsburg, WI
- Justin Lam. College Park HS, Pleasant Hill, CA
- Cole Brieman. Mayville HS, Mayville, WI
- Kurry Delparte. Valley City HS, Valley City, ND
- Mirna Kouri. Lester B. Pearson Catholic HS, Gloucester, ON, Canada
- Andrew Henderson. Valley City HS, Valley City, ND
- Brad Sams. Madeira HS, Cincinnati, OH
- David Moeller. Mayville HS, Mayville, WI
- Katie Santilli. Bishop Kenny HS, Jacksonville, FL
- Mike Winters. Madeira JHS, Cincinnati, OH
- Matt McNamara. LaSalle College HS, Wyndmoor, PA
- Kim Nguyen. Lester B Pearson Catholic HS, Gloucester, ON, Canada
- Justin Dryer. Ruskin HS, Kansas City, MO
- Peter Ross. Hulme Grammar School for Boys, Oldham, UK
- Eric Tsai. Columbus HS, Columbus, GA
- Brian Windmiller. Zionsville HS, Zionsville, IN
- Nicole Poirier. Lester B. Pearson Catholic HS, Gloucester, ON, Canada
- Harjot Mann. Westwood Collegiate, Winnipeg, MB, Canada
- Matthew Liu. Kentridge HS, Kent, WA
- Chris Miller. Alleghany HS, Sparta, NC
- Cheung Yiu Ng. Jefferson HS, Daly City, CA
- Jennifer Klue. Merritt Island HS, Merritt Island, FL
- Sandi Pace. South Lakes HS, Reston, VA
- Amy Schalinski. Mayville HS, Mayville, WI
- Tao Chen. Miller MS, San Jose, CA
- Denise Hussli. Mayville HS, Mayville, WI
- Yi-Chun Chen. Newport Harbor HS, Newport Harbor, CA
- Andrew Nowaczek. Lester B. Pearson HS, Gloucester, ON, Canada
- Benny Wong. Hugh McRoberts SS, Richmond, BC, Canada
- Mike Wilson. Louisa County HS, Mineral, VA
- Thomas Barker. Louisa County HS, Mineral, VA
- Janice Mitter. Louisa County HS, Mineral, VA
- Ryan Amick. Louisa County HS, Mineral, VA
- Lance Hunter. Louisa County HS, Mineral, VA
- Mike Cook. Louisa County HS, Mineral, VA
- Janette Lloyd. Louisa County HS, Mineral, VA
- Robbie Lane. Louisa County HS, Mineral, VA
- Perry Osborne. Louisa County HS, Mineral, VA
- Barrett Meredith. Louisa County HS, Mineral, VA
- Terrell Barlow. Louisa County HS, Mineral, VA
- Chris Cheely. Louisa County HS, Mineral, VA
- Terri Ryalls. Louisa County HS, Mineral, VA
- Jennifer Mason. Louisa County HS, Mineral, VA
- Hayley Mills. Louisa County HS, Mineral, VA
- Carrie Hughes. Louisa County HS, Mineral, VA
- Jennifer Smith. Louisa County HS, Mineral, VA
- Aaron Dauberman. Louisa County HS, Mineral, VA
- Adam Gholson. Louisa County HS, Mineral, VA
- Emily Pillarella. Louisa County HS, Mineral, VA
- Christina Spaur. Louisa County HS, Mineral, VA
- Jessica Lunsford. Louisa County HS, Mineral, VA
- Jeremy Sestito. Louisa County HS, Mineral, VA
- Deven Hill. Louisa County HS, Mineral, VA
- Brad Harris. Louisa County HS, Mineral, VA
- Krystal Harris. Louisa County HS, Mineral, VA
- Monique Mills. Louisa County HS, Mineral, VA
- Halsey Green. Louisa County HS, Mineral, VA
- Jordan Honrine. Louisa County HS, Mineral, VA
- Angela Huff. Louisa County HS, Mineral, VA
- Chris McVay. Louisa County HS, Mineral, VA
- Sara Field. Louisa County HS, Mineral, VA
- C.T. Thiemann. Louisa County HS, Mineral, VA
- Katie Kane. Louisa County HS, Mineral, VA
- Brian Clary. Louisa County HS, Mineral, VA
- Dustin Madison. Louisa County HS, Mineral, VA
- Dan Moyer. Newport Harbor HS, Newport Beach, CA
- Beth Thompson. Bacon County HS, Alma, GA
- Yuan Xu. Sir Winston Churchill SS, Vancouver, BC, Canada
- Jelisse Marrero. Bishop Kenny HS, Jacksonville , FL
- Steve Gibbs. Lester B. Pearson HS, Gloucester, ON, Canada
- Anne Wood. Brookstone HS, Columbus, GA
- Cindy Wang. Shanghai American School, Shanghai, China
- Alim Assar. Kilgour School, Richmond, BC, Canada
- Michael Pappalardo. International School of Kuantan, Malaysia
- Hwa-En Noh. International School of Kuantan, Kuantan, Malaysia
- Emil Chow. Shorewood HS, Seattle, WA
- Grace Wang. Astoria HS, Astoria, OR
- Michael Tin. Newport Harbor HS, Newport Beach, CA
- Andy Park. Cariboo Hill SS, Burnaby, BC, Canada
- Claudia Schleiss. Sekundarschule Horgen, Zurich, Switzerland
- Drew Schwartz. Brookstone HS, Columbus, GA
- Jeff Behrend. Madison Memorial HS, Madison, WI
- Kerry Hillard. Mayville HS, Mayville, WI
- Jeff Kiser. Homeschool, Sellersville, PA
- David Brown. Hilton Head Christian Academy, Hilton Head, SC
- Ray Shawhan. Hillsboro HS, Hillsboro, OH
- Samuel Snyder. Hillsboro HS, Hillsboro, OH
- Cherie McCauley. Mayville HS, Mayville, WI
- Melissa Mauch(Lien). Valley City HS, Valley City, ND
- Robert Schneider. Valley City HS, Valley City, ND
- Kyle Miller. Hillsboro HS, Hillsboro, OH
- John Button. Austin HS, Austin, PA
- Josh Brandon. Versailles HS, Versailles, OH
- Amy Fitzner. Valley City HS, Valley City, ND
- Bev Bradley. Lester B. Pearson HS, Gloucester, ON, Canada
- Jason Lo. Twin Peaks MS, Poway, CA
- Chris Kelley. Raytown South HS, Raytown, MO
- Shweta Patel, Carteret HS, Carteret, NJ
- Pauline Lo. Hugh McRoberts HS, Richmond, BC, Canada
- Jean Robbins. Brookstone HS, Columbus, GA
- Aaron Paquette. Jackson Heights MS, Oviedo, FL
- Jason Spenser. Newport Harbor HS, Newport Beach, CA
- Jeff Rosellen. West HS, Painted Post, NY
- Katrina Funkhouser. Pinelands Regional HS, Tuckerton, NJ
- Jonathan Veniard. Bishop Kenny HS, Jacksonville, FL
- Wenjun Ouyang. C. K. McClatchy HS, Sacramento, CA
- John Millard. Ernest Righetti HS, Santa Maria, CA
- John Raible. Deland HS, Deland, FL
- Krista Schultz. Johnson Creek HS, Johnson Creek, WI
- Elena Udovina. The Agnon MS, Beachwood, OH
- Christopher Lam. Hugh McRoberts SS, Richmond, BC, Canada
- Jonathan King. Charlotte Latin School, Charlotte, NC
- Jean-Michel Binette. Polyvalente le Boisé, Victoriaville, Canada/QC
- Dan Sears. Newport Harbor HS, Newport Beach, CA
- Pako Chan. Oakridge SS, London, ON, Canada
- Anant Nyshadham. Brookstone HS, Columbus, GA
- Kevin Campos. Newport Harbor HS, Newport Beach, CA
- Scott Chang. Hugh McRoberts SS, Richmond, BC, Canada
- Jennie Tanouye. Monte Vista HS, Alamo, CA
- Mike Mason. Lester B. Pearson HS, Gloucester, ON, Canada
- Geoff McSherry. Hugh McRoberts SS, Richmond, BC, Canada
- Sara Ho. S.K.H. Tsang Shiu Tim SS, Hong Kong
- Jerry Lin. Shanghai American School, Shanghai, China
- Nate French. Windsor HS, Windsor, VT
- Sierra Hedberg. Montgomery MS, El Cajon, CA
- Chris Garrahy. Valley City HS, Valley City, ND
- John Tullos. North Delta HS, Batesville, MS
- Sarah Cyr. Presque Isle HS, Presque Isle, ME
- Scott Levasseur. Presque Isle HS, Presque Isle, ME
- Angelie Michaud. Presque Isle HS, Presque Isle, ME
- Lucas White. Presque Isle HS, Presque Isle, ME
- Wesley York. Presque Isle HS, Presque Isle, ME
- Tricia Ciccolella. Presque Isle HS, Presque Isle, ME
- Ashley Jones. Presque Isle HS, Presque Isle, ME
- Robert Langley. Presque Isle HS, Presque Isle, ME
- Wayne MacFarline. Presque Isle HS, Presque Isle, ME
- Brian Michaud. Presque Isle HS, Presque Isle, ME
- Amanda Perkins. Presque Isle HS, Presque Isle, ME
- Jordan Wildeman. Presque Isle HS, Presque Isle, ME
- Don Clark. Osceola HS, Seminole, FL
- Nicole James. Osceola HS, Seminole, FL
- Britain Wright. North Delta HS, Batesville, MS
- Abby Yochum. Hillsboro HS, Hillsboro, OH
- Mike Nyhan. Pinelands Regional HS, Tuckerton, NJ
- Alyssa Farmer. Stone HS, Wiggins, MS
- Rebecca Hickman. Stone HS, Wiggins, MS
- Je'melia Evans. Stone HS, Wiggins, MS
- Melissa Romans. Valley City HS, Valley City, ND
- Lindsey Doyle. Valley City HS, Valley City, ND
- Michael Middlestead. Valley City HS, Valley City, ND
- Alyssa Martin. North Delta HS, Batesville, MS
- Ayaiza Gutierrez. Lester B Pearson HS, Gloucester, ON, Canada
- Cory King. Puxico HS, Puxico, Missouri
- Steven Zhou. Commack HS, Commack, NY
- Joanna Mavrofrides. Bishop Moore HS, Orlando, FL
- Rachana Dixit. Brookstone HS, Columbus, GA
- Albert Wang. Los Alamos HS, Los Alamos, NM
- Angelina Cernick. Cernick Homeschool, Cle Elum, WA
- Keunho Kim Park. Brookstone HS, Columbus, GA
- Ben Foster. John F Kennedy MS, Northampton, MA
- Terry Anderson. Dr G W Williams SS, Aurora, ON, Canada
- Eric Haseleu. Mayville MS, Mayville, WI
- Jeremy Wilson. Newport Harbor HS, Newport Beach, CA
- Erin Harness. Upper Lake HS, Upper Lake, CA
- Mallory Linton. Lester B Pearson HS, Gloucester, ON, Canada
- Sara Harper. Bishop Moore HS, Orlando, FL
- Mike Munson. Newport Harbor HS, Newport Beach, CA
- Farhaan Assar. Kilgour School, Richmond, BC, Canada
- Xing Wei. Hugh McRoberts SS, Richmond, BC, Canada
- Jessie Laird. Fox Valley Lutheran HS, Appleton, WI
- Danny Hilton. Newport Harbor HS, Newport Beach, CA
- Matt Gibbs. Newport Harbor HS, Newport Beach, CA
- Daniel Gee. Stone Valley MS, Alamo, CA
- Jenny Coutta. Franklin County HS, Winchester, TN
- Stanley Hsu. Saratoga HS, Saratoga, CA
- Carlin Eng. Saratoga HS, Saratoga, CA
- Blaire Parker. North Delta HS, Batesville, MS
- Danny Bartsch. Mayville HS, Mayville, WI
- Alex Greene. Winter Springs HS, Winter Springs, FL
- Randi Tompt. Valley City HS, Valley City, ND
- Evan Manaresi. Pinelands Regional HS, Tuckerton, NJ
- Erin Corwin. Valley City HS, Valley City, ND
- Henry Sharp. Riverside Military Academy, Gainesville, GA
- Kenneth Ackerman. Quilcene HS, Quilcene, WA
- Jonathan Wang. Saratoga HS, Saratoga, CA
- Travis Herzog. Communications Arts HS, San Antonio, TX
- Yiming Yao. New Westminster SS, New Westminster, BC, Canada
- Grace Yeh. Hugh McRoberts SS, Richmond, BC, Canada
- Bobby Gajic. Creekwood MS, Kingwood, TX
- Murtaza Bachoo. Richmond SS, Richmond, BC, Canada
- John Parish. Waupun HS, Waupun, WI
- Samuel Timothy Dy. St Stephen's HS, Manila, Philippines
- Jesse Jou. Montgomery Blair HS, Silver Spring, MD
- Guy David. Ransom MS, Miami, FL
- Matthew Pelletier. Presque Isle HS, Presque Isle, ME
- Paul Chen. John Dewey HS, Brooklyn, NY
- Kimi Parker. Madeira HS, Madeira, OH
- Danielle Johnson. Reading-Fleming MS, Flemington, NJ
- Greg Hayrapetyan. Manhattan HS, Manhattan, KS
- Maia Lepage. Lester B Pearson, Gloucester, ON, Canada
- Eric Moutal. Hugh McRoberts SS, Richmond, BC, Canada
- Teresa Jewell. Lester B Pearson HS, Gloucester, ON, Canada
- Michael Tso. St Michael's University School, Victoria, BC, Canada
- Geno Thompson. West Orange HS, Winter Garden, FL
- Andrea Duchac. Waupun HS, Waupun, WI
- Matthias Kick. Abraham Lincoln ES, Medford, OR
- Thomas Tran. Ecole Secondaire de Clare, Meteghan River, NS, Canada
- Kris Neahring. Kaneland MS, Maple Park, IL
- Hasina Hafiz. Islamic Foundation, Villa Park, IL
- Stevi D. Abraham Lincoln ES, Medford, OR
- Lauren Stewart. Southeast HS. Wichita, KS
