Question

a car travels 125km in 2 1/2 hour .how much is required to cover 75km with the same speed

Answer 1

speed of car=125/2.5 km/h

=50km/h

time=distance/speed

=75/50

=1.5 hours

=90 min

Answer 2

$hey \\ \: \: \: here \: is \: your \: answer$

125km=5/2hr
1km=5/2×1/125
=1/2×1/25
=1/50
then in 75km =1/50×75
= 75/50
= 1.5 hr

$thanks$