A train covers a distance in 50 min ,if it runs at a speed of 48kmph on an average.Thespeed at which the train must run to reduce the time of journey to 40min will be.

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Q:18

A train covers a distance in 50 min ,if it runs at a speed of 48kmph on an average.The
speed at which the train must run to reduce the time of journey to 40min will be.

60kmps

61kmps

70kmps

65kmps

Explanation:

Time=50/60 hr=5/6hr
Speed=48mph
distance=S*T=48*5/6=40km
time=40/60hr=2/3hr
New speed = 40* 3/2 kmph= 60kmph

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