In 100 m race, A covers the distance in 36 seconds and B in 45 seconds. In this race A beats B by:  Select:
A) 20m  B) 25m  C) 22.5m  D) 9m  E) None of these
Explanation:   Distance covered by B in 9 sec. =(100/45 x 9)m = 20m   A beats B by 20 metres.   20mnswer: 20m
<result>A</result>
In 100 m race, A covers the distance in 36 seconds and B in 45 seconds. In this race A beats B by: