At a exactly afternoon, 'A' started to walk at 6km/hr and at 13 : 30 p.m. 'B' follows by running at 8km/hr. When will 'B' overtake 'A'. Also find...
1] When 'A' is 5 km ahead of 'B'.
2] When 'A' is 3 km behind the 'B'.
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A walks for 3.5 hours, at 6 km/hr, giving them a 16 km head start. Let t be the time it takes for B to catch up. Then:
10t=4t+16
6t=16
t=16/6
=8/3 hours
8/3 x 10=80/3 kilometers
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