Asked by MNHS_HELP
Runners A and B practice in a round track going in opposite directions. Runner A takes 40 minutes to go once around the track. The two begin at the same time and meet every 15 minutes. How long does B take to go once around the track?
Answers
Answered by
Steve
if B takes x minutes, then the two runners cover the entire track in 15 minutes.
1/40 + 1/x = 1/15
1/40 + 1/x = 1/15
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