Question

rajdhani express moves at speed of 120km/h.How long will it take to cover a distance of 15 km.

Answer 1

it will take 8 hours to cover a distance of 15 km. This is the process:

Speed of train=120km/hr
distance to cover=15km
So,time required=d/speed
=120/15
=8

Answer 2

velocity is 120

V=s/t

120=15/t

so t=8