A and B start running at the same time and from the same point around a circle.

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A and B start running at the same time and from the same point around a circle. If A can complete one round in 40 seconds and B in 50 seconds, how many seconds will they take to reach the starting point simultaneously ?

Options:

A . 200

B . 2000

C . 90

D . 10

Answer: Option A
Answer: (a)Required time= LCM of 40 and 50 seconds= 200 seconds

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