In a 500m race, the ratio of the speeds of two constants A and B is 3: A has a start of 140 m. Then, A wins by:

A 60m

B 40m

C 20m

D 10m

Correct Answer: Option C

To reach the winning post A will have to cover a distance of (500 - 140)m, i.e., 360 m.

While A covers 3 m, B covers 4 m.

While A covers 360 m, B covers = (4*360/3) m = 480m

Thus, when A reaches the winning post, B covers 480 m and therefore remains 20 m behind.