91. A goods train runs at the speed of 72 kmph and crosses a 250 m long platform in 26 seconds. What is the length of the goods train?

72 x
5
m/sec
= 20 m/sec.

18

Time = 26 sec.
Let the length of the train be x metres.

Then,
x + 250
= 20

26

x + 250 = 520
x = 270.