2009 AMC 10A Problems/Problem 4
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Problem
Eric plans to compete in a triathlon. He can average miles per hour in the -mile swim and miles per hour in the -mile run. His goal is to finish the triathlon in hours. To accomplish his goal what must his average speed in miles per hour, be for the -mile bicycle ride?
Solution
Since , Eric takes hours for the swim. Then, he takes hours for the run. So he needs to take hours for the mile run. This is
See also
2009 AMC 10A (Problems • Answer Key • Resources) | ||
Preceded by Problem 3 |
Followed by Problem 5 | |
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