In a 500 m race, the ratio of the speeds of two contestants A and B is 3 : 4. A has a start of 170 m. Then, A wins by: Choose the correct choice from the following choices:
A) 60 m B) 20m C) 43m D) 20m E) 23m
To reach the winning post A will have to cover a distance of (500 - 170)m, i.e., 330 m.   While A covers 3 m, B covers 4 m.   While A covers 330 m, B covers 4 x 330/3	m	= 440 m.   Thus, when A reaches the winning post, B covers 440 m and therefore remains 60 m behind.   A wins by 60 m.   60 mnswer:	60 m
<result>A</result>
In a 500 m race, the ratio of the speeds of two contestants A and B is 3 : 4. A has a start of 170 m. Then, A wins by: