Question

A and b take part in 100 m race. a runs at 5 km/h. a gives b a start of 8 m and still beats him by 8 seconds. the speed of b is :

Answer 1

Time taken by A to cover 100 m = (100x18)/25 = 72 sec

Time of B to cover 92 m = 72+8=80 sec

Speed of B = 92/80 m/sec = (92x18)/(80x5) = 4.14 km/hr