Question

A can run 100 m in 27 seconds and B in 30 sec .A beat B by

Answer 1

answer is the A will beat B by 3 seconds

Answer 2

speed of A=100/27
speed of B=100/30
so A will reach the destination point 3seconds before B for 100 m
or we can say
if the distance is 100x
then A will reach the destination point 3x before B