In 150 m race, A covers the distance in 36 seconds and B in 45 seconds. In this race A beats B by:	Options
A) 20 m	B) 25 m	C) 22.5 m	D) 9 m	E) 30 m

Rationale: "distance covered by b in 9 sec . = 150 / 45 x 9 m = 30 m . a beats b by 30 metres . answer : option e"
Answer: E