A train covers a certain distance in 50 minutes, if it runs at a speed of 48 km/hr on an average. The speed at which the train must run so that time of journey becomes 40 minutes?

A train covers a certain distance in 50 minutes, if it runs at a speed

1.	A train covers a certain distance in 50 minutes, if it runs at a speed of 48 km/hr on an average. The speed at which the train must run so that time of journey becomes 40 minutes?
A.	10 km/hr
B.	40 km/hr
C.	60 km/hr
D.	20 km/hr
Answer» D. 20 km/hr

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A train covers a certain distance in 50 minutes, if it runs at a speed of 48 km/hr on an average. The speed at which the train must run so that time of journey becomes 40 minutes?

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