A train covers a distance in 50 min, if it runs at a speed of 48 kmph on an average. The speed at which the train must run to reduce the time of journey to 40 min will be.
none of the above
Time = 50/60 hr = 5/6 hr
Speed = 48kmph
distance = S*T = 48 * 5/6 = 40km
time = 40/60hr = 2/3hr
New speed = 40 * 3/2 kmph = 60kmph
Back To Top