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.
Answer & explanation
Correct answer: option 2
Speed = \(\frac{ Distance}{ Time}\)
48 km/hr = \(\frac{ Distance}{ \text{5/6 hr} }\)
Distance = 48 x \(\frac{5 }{6 }\)
Distance = 40 km
Speed at which the train must run to reduce the time of journey to 40 min
Speed = \(\frac{40km}{ 4/6hr}\)
Speed = \(\frac{240km}{ 4hr}\)
Speed = 60 km/hr