Question

A car travel120km in 3 hours at constant speed in how many hours will the car covers 270km

Answer 1

the solution is in the attachment

Answer 2

so the speed would be
$v=distance/time$
$v=120/3=40km/h$
so the speed is 40km/h

now time taken to cover 270km

$v=distance/time$
$40=270/time$
$time=270/40=6.75 \:hours$