# Who runs Faster?

A is running on interior circular track (radius 100m) and B is running on interior circular track (radius 102m). A complete in 1 min 30 sec and B completes it in 1 min 32 sec. Who runs faster?

- Both equal
- A faster
- B faster
- None of these

**Answer: (3) B faster**

**Explanation:-
**The interior radius of a circular track = 100 m

Then, the circumference of circular track = 2 x 22 x 100/7 m

Time taken by A to cover a round of a circular track = 1 min 30 sec

= 60 + 30

= 90 sec

Then, the speed of A = 44 x 100/90 x 7

= 6.94 m/sec

The exterior radius of a circular track = 102 m

Then, the circumference of a circular track = 2 x 22 x 102/7

Time taken by B to cover a round of track = 1 min 32 sec

= 60 + 32

= 92 sec

Then, the speed of B = 44 x 102/7 x 92

= 6.96 m/sec.

Thus, the B runs faster than A.

Hence, the answer is (3) B faster.