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Quantum CyberTeaser: May/June 2000


B293

The hose knows. A man is filling two tanks with water using two hoses. The first hose delivers water at the rate of 2.9 liters per minute, the second at a rate of 8.7 liters per minute. When the smaller tank is half full, he switches hoses. He keeps filling the tanks, and they both fill up completely at the same moment. What is the volume of the larger tank if the volume of the smaller tank is 12.6 liters?

Solution

The hose knows!

The winners:

  • Jerold Lewandowski (Troy, New York)
  • Theo Koupelis (Wausau, Wisconsin)
  • Nick Fonarev (Staten Island, New York)
  • Christopher Franck (Redondo Beach, California)
  • Bruno Konder (Rio de Janeiro, Brazil)
  • Maxim Bachmutsky (Kfar-Saba, Israel)
  • John E. Beam (Bellaire, Texas)
  • Chris Resmondo (Pensacola, Florida)
  • Lue Chen (New York, New York)
  • Anastasia Nikitina (Pasadena, California)

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