In 100 m race, A covers the distance in 36 seconds and B in 45 seconds. In this race A beats B by:  Choose one:  A) 20 m  B) 22 m  C) 32 m  D) 40 m  E) 30 m
Distance covered by B in 9 sec. =(100/45 x 9) m = 20m   THEREFORE - A beats B by 20 metres.   20 mNSWER:20 m
<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: