Timework28

3A and B start from the same point to run in opposite directions round a circular path 550 yards in length, A giving B a start of 100 yards. They pass each other when A has run 250 yards. Who will come first to the starting point and at what distance will they be apart?

Option : D
Explanation :
When A has run 250 yards, B should have run
550 - 250 = 300 yards.
∴ Bruns 300 - 100 = 200 yards in the same time taken by A to run 250 yards.
∴ Ratio of the speeds of A and B = 250 : 200 = 5 : 4
If speed of A is 5x yards per minute, then speed at B = 4x yards/min.
Time taken by B to reach the starting point

Hence B is 10 yards behind A.

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