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A goods train and passenger train are ru...

A goods train and passenger train are running in same direction with a speed in the ratio 1 : 2 the driver of goods train observes that the passenger train coming from behind overtake and crossed his train completely in 60 sec. whereas a passenger on passenger train looks that he crossed the goods train in 40 sec. Find the ratio of their length.

A

`1 : 2`

B

`2 : 1`

C

`3 : 2`

D

`2 : 3`

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The correct Answer is:
B
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