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A and B from a to B, a speed of 80 meters per minute to catch up with the first B, B 65 meters per minute, a with 20 points to catch up with B How many meters does B start before a?
It took 20 points for a to catch up with B. during this period, B was also walking, then: 80m / min × 20min - 65m / min × 20min = 300m, that is, B started 300m ahead of A
From a to B, a chases B at a speed of 80 meters per minute. It is known that B walks 65 meters per minute, and a takes 20 minutes to catch up with B. how many meters does B start from a line
(80-65) X20 = 300m
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