Question

A train travelling at uniform speed passes by a platform 220m long in 30s and another platform 325m long in 39 sec.Find the length of the train and the speed of the train

Answer 1

Answer:

Here goes the solution!

Given, s = t + 220/30 _______( i )

and , s = t + 325/38 _______( ii )

Solving ( i ) & ( ii ), we get,

39(t + 220) = 30(t + 325)

39t + 8580 = 30t + 9750

9t = 1170

t = 130 m

Put in ( i ), we get

Speed = 130 + 220/30

= 350/30

= 11.66 m/sec

S = 3600 × 11.66/1000