Question

The two trains of lengths 400 m, 600 m respectively, running at same directions. The faster train can cross the slower train in 180 sec, the speed of the slower train is 48 kmph. Then find the speed of faster train ?
A) 68 kmph
B) 52 kmph
C) 76 kmph
D) 50 kmph

Answer 1

Let the speed of the faster train be 'X' kmph,

Then their relative speed= X - 48 kmph

To cross slower train by faster train,

Distance need to be cover = (400 + 600)m = 1 km. and

Time required = 180 sec = 180/3600 hr = 1/20 hr.

Time = Distance/Speed

=> 1/20 = 1/(x-48)

X = 68 kmph

Answer 2

Step-by-step explanation:

A》》》68km/h

mark as branliest plz