In a 100 m race Kamal defeats Bimal by 5 seconds. If the speed of Kamal is 18kmph, then the speed of Bimal is

Solution

Time taken by Kamal

100/

18X5/18

= 20 seconds

Time taken by Bimal

20+5 = 25

100/25

4X18/5

14.4 kmph

Answer 14.4kmph