two persons A and B walk round a circle whose diameter is 1.4 km A walks at a speed of 165 per min B walks at a speed of 110 min .if they both started at the same point and walk in the same direction at what time they both be at the same point again
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look relative speed of a with respect to b is 55 m/min
it means every min distance between them is increasing by 55 metres
now to meet at the starting point
distance between a and b must have increased to 2×22/7×700=4400mts cricumference
so for that time will be 4400/55=80minutes ans
it means every min distance between them is increasing by 55 metres
now to meet at the starting point
distance between a and b must have increased to 2×22/7×700=4400mts cricumference
so for that time will be 4400/55=80minutes ans
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