SOLUTION: Two people, who are 315 meters apart, start walking toward each other at the same time. If they walk at rates of 1.5 and 2 m/sec, how much time will pass before they meet?
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Question 534326: Two people, who are 315 meters apart, start walking toward each other at the same time. If they walk at rates of 1.5 and 2 m/sec, how much time will pass before they meet? Answer by Maths68(1474) (Show Source):
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Distance = 315 meters
Effective Speed = (1.5+2)m/sec=3.5m/sec
Time=distance/speed
Time = 315/3.5
Time = 90 sec.
They will meet after 90 seconds.
Check
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One person will cover = time * speed = 90*1.5 = 135 meters
Other person will cover = time * speed = 90*2 = 180 meters
Sum of the distance covered by both persons = 135 + 180 = 315 meters
