In a 500 m race, the ratio of the speeds of two contestants A and B is 2 : 4. A has a start of 300 m. Then, A wins by:  Choose the correct choice from the following options:	A) 60 m	B) 20m	C) 43m	D) 20m	E) 100 m
To reach the winning post A will have to cover a distance of (500 - 300)m, i.e., 200 m.   While A covers 2 m, B covers 4 m.   While A covers 200 m, B covers 4 x 200/2	m	= 400 m.   Thus, when A reaches the winning post, B covers 400 m and therefore remains 100 m behind.   A wins by 100 m.   Answer:	100 m
<result>E</result>
In a 500 m race, the ratio of the speeds of two contestants A and B is 2 : 4. A has a start of 300 m. Then, A wins by: