Question

A bus covers a distance in 50 minutes, if it runs at 48 km/hr on an average speed. The speed at which the bus must run to reduce the time of journey to 40 minutes will be
1. 40 km/hr
2. 60 km/hr
3. 50 km/hr
4. 30 km/hr

Answer 1

Correct Answer - Option 2 : 60 km/hr

Given:

Time is taken to cover distance = 50 minutes

Speed of a bus = 48 kmph

Formula used:

Distance = speed × time

Speed = distance / time

Calculations:

Distance = 48 × (50/60) = 40 km

Speed = 40/(40/60)

⇒ 60 km/hr

∴ The bus must run to reduce the time of journey to 40 minutes it runs at 60 km/hr