In a 400 m race,A covers the distance in 60 seconds and B in 100 second.In this race A beats B by :  Pick:  A) 20 m  B) 125 m  C) 120 m  D) 160 m  E) None of these
Solution   Distance covered by B in 40 sec. = (400/100x40)m =160m.   ∴ A beats B by 160 metres.   Answer 160 m
<result>D</result>
In a 400 m race,A covers the distance in 60 seconds and B in 100 second.In this race A beats B by :