2006 AMC 12B Problem 5
Problem 5 of 25EasierArithmetic
John is walking east at a speed of miles per hour, while Bob is also walking east, but at a speed of miles per hour. If Bob is now mile west of John, how many minutes will it take for Bob to catch up to John?
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Solution
Bob closes the gap at a relative speed of miles per hour. To cover the -mile gap takes hour, or minutes.
Thus, the correct answer is A.
Tagged: relative speed · distance rate and time