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Quantum CyberTeaser: March/April 1998


B228

Truancy treats. Boris came to school 35 minutes after the first class had started. So he decided to go to the nearest shop and buy an ice cream cone. Unfortunately, when he came back, the second class had already begun. He immediately ran for another ice cream cone and spent as much time at the shop as before. When he returned the second time, he saw that there were 50 minutes left before the start of the fourth class. Does he have enough time to buy and eat a third ice cream cone if every class, including the break after it, takes 55 minutes?

Solution


The winners:

  • Liro Goldenberg (Holon, Israel)
  • Suhas Nayak (New South Wales, Australia)
  • David Friend (Winchester, England)
  • Hana Bizek (Argonne, Illinois)
  • Aleksei Lukashkin (East Sussex, England)
  • Bob Cordwell (Ellicott City, Maryland)
  • Jaak Sarv (Tallinn, Estonia)
  • Bruno Konder (Rio de Janeiro, Brazil)
  • Alex Wissner-Gross (New Hyde Park, New York)
  • Theo Koupelis (Wausau, Wisconsin)

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