Question

A car covers 614.10km in 13.8 hours. How long will it take to travel 325 km ?

Answer 1

car covers 614.10 km in 13.8 hours
so
speed = distance/time

speed = 614.10/13.8 km/hr

= 44.5 km/hr

now time taken to cover 325 km distance

time = distance /speed

= 325 /44.5 hr

= 7.30 hours = 7 hour 18 minutes

Answer 2

614.10 km = 13.8 hrs
1 km = 13.8/614.10 hrs
325 km = (13.8/614.10) ×325
=(13.8 × 325)/614.10
=(138×325)/6141 ; ( cancelling 0 up and down)
= 44850/6141
= 7.3 Hrs