High School Challenge

Week Ending 9-19-99

Send Answer to: ucfcasio@pegasus.cc.ucf.edu

Congratulations to Mark Bicket of North High School in Edmond, OK. Mark wins the Casio CFX-9850G Color Graphing calculator.

Two Clocks

I started 2 analog clocks (12 hours on each face) at the same time. I know one of them runs 2 minutes too slowly each hour while the other goes one minute too fast each hour. Assuming they show the same time when I start them, how long will it be until both clocks show the same time again? That is, both the minute and hour hands match the initial time.

Correct Solutions:

  1. Sanjaya Ratnaweera. Dharmaraja College, Kandy, Sri Lanka
  2. Lisa Schechner. Manorhaven ES, Port Washington, NY
  3. Mike Birchmeier. Worthington Kilbourne HS, Columbus, OH
  4. Andy Semon. Clearwater HS, Clearwater, FL
  5. Jason Juang. Sycamore JHS, Cincinnati, OH
  6. Takashi Fujita. Hollwood HS, Perth, WA, Australia
  7. Mark Bicket. North HS, Edmond, OK
  8. Mike DeSanto. Triton HS, Runnemede, NJ
  9. John Paul Bida. Grandville HS, Grandville, MI
  10. Kent Suzuki. Traditional Learning Academy, Coquitlam, BC, Canada
  11. Robert Suzuki. Traditional Learning Academy, Coquitlam, BC, Canada
  12. Sarah Creech. Homeschooled, Hilton Head Island, SC
  13. John Pinto. Bishop Moore HS, Orlando, FL
  14. Asher Walkover. Rambam Mesivta, Lawrence, NY
  15. Tulika Kashyap. Kendriya Vidyalaya RK Puram, New Delhi, India
  16. Tong Cao. John Dewey HS, New York, NY
  17. Stephanie Jemima Chong. Uno HS, Manila, Philippines
  18. Michael Guzik. Guzik Learning Center, San Diego, CA
  19. Julie Chua. Uno HS, Manila, Philippines
  20. Rain Go. Uno HS, Manila, Philippines
  21. Lisa Gardner. Boyette Springs ES, Riverview, FL
  22. Jongmin Baek. Hyde JHS, Cupertino, CA
  23. Eric Tsai. Columbus HS, Columbus, GA
  24. Sorin Ionescu. John Abbot College, Montreal, Canada
  25. Brett White. Greenwood Lakes MS, Lake Mary, FL
  26. Guy David. Ransom MS, Miami, FL
  27. Adam Slattery. Wentzville Holt HS, Wentzville, MO
  28. Garrick Pang. South Grand Prairie HS, Grand Prairie, TX
  29. Josephine Chan. Lowell HS, San Francisco, CA
  30. Amruth Krishnan. DAV School, Chennai, Tamil Nadu, India
  31. Kyle DeWeese. The Bodine School, Germantown, TN
  32. John Peters. Bishop Kenny HS, Jacksonville, FL
  33. Paul Chen. John Dewey HS, Brooklyn, NY
  34. Heather Miller. Gloucester HS, Gloucester, VA
  35. Tao Chen. Miller MS, San Jose, CA
  36. John Monteith. North Delta HS, Batesville, MS
  37. Ki Hyun Kim. River Hill HS, Ellicott City, MD
  38. Tyler Scruggs. North Delta HS, Batesville, MS
  39. Mike Oxlong. Jupiter HS, Jupiter, FL
  40. Sam Watson. North Delta HS, Batesville, MS
  41. Samuel Timothy Dy. St. Stephen's HS, Manila, Philippines
  42. Adam Wander. Sauk Centre HS, Sauk Centre, MN
  43. Steve Balamut. Sauk Centre HS, Sauk Centre, MN
  44. Andrew Bass. Suwannee HS, Live Oak, FL
  45. Ken Reynolds. Sauk Centre HS, Sauk Centre, MN
  46. Amanda Stuhm. McCreary School, McCreary, MB, Canada
  47. Kyle Bentfield. Sauk Centre HS, Sauk Centre, MN
  48. Haamed Ghazvini. Sonora HS, La Habra, CA
  49. Yiming Yao. New Westminster SS, New Westminster, BC, Canada
  50. Andrew Nguyen, Newport Harbor HS, Newport Beach, CA
  51. Tommy Zink. Averill Park HS, Averill Park, NY
  52. Sarah Reuter. Sauk Centre HS, Sauk Centre, MN
  53. Jessica Felling. Sauk Centre HS, Sauk Centre, MN
  54. Wei Quan Zhou. Brooklyn Tech HS, Brooklyn, NY
  55. Cami Stinson. Sulphur PS, Sulphur, OK
  56. Daniel Yu. Randolph MS, Randolph, NJ
  57. Eric Melander. Pomona HS, Arvada, CO
  58. Justin Lam. College Park HS, Pleasant Hill, CA
  59. Natalie Timm. Ben Franklin JHS, Stevens Point, WI
  60. Jason Kelliher. Jackson Heights MS, Oviedo, FL
  61. Nicole Nielsen. Oviedo HS, Oviedo, FL
  62. Scott Henry. Copley-Fairlawn HS, Copley, OH
  63. Kyle Pohlkamp. P.J. Jacobs JHS, Stevens Point, WI
  64. Justin Shih. Clear Lake HS, Houston TX
  65. Michael Moyer. The Way Home School, Carlisle, PA
  66. Jean Lee. Ellicott Mills MS, Ellicott City, MD
  67. Nathaniel Major. Homeschool, Paso Robles, CA
  68. Patrice Bowman. Contemporary Learning Academy, Denver, CO
  69. Melinda Rodriguez. Contemporary Learning Academy, Denver, CO
  70. Molly Kron. Contemporary Learning Academy, Denver, CO
  71. Veronica Gutierrez. Contemporary Learning Academy, Denver CO
  72. Tyler Morrison. Contemporary Learning Academy, Denver, CO
  73. Kenneth Thrower. Contemporary Learning Academy, Denver, CO
  74. Cory Zelna. Bishop Moore HS, Orlando, FL
  75. Joel Correa. South Lafourche HS, Galliano, LA
  76. Patrick Paczkowski. American School of Warsaw, Warsaw, Poland
  77. Norito Irei. James Madison Memorial HS, Madison, WI
  78. Nimish Ramanlal. Jackson Heights MS, Oviedo, FL
  79. Cheryl Corsiglia. Osceola MS, Ocala, FL
  80. Jessica Dennis. Mt. Olive MS, Budd Lake, NJ
  81. Halsey Green. Louisa County HS, Mineral, VA
  82. Tiffany Chao. Seaquam HS, Delta, BC, Canada
  83. Emily Garrison. Phillips Exeter Academy, Exeter, NH


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