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### Discussion :: Problems on Trains

1. 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?

2.  A. 230 m B. 240 m C. 260 m D. 270 m

Explanation :

 Speed = $$[ 72 *\frac { 5 } { 18 } ]$$ m/sec = 20 m/sec.

Time = 26 sec.

Let the length of the train be x metres.

 Then, $$\frac { X + 250} { 26 }$$ = 20

x + 250 = 520

x = 270.

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