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shreya

· started a discussion

· 1 Months ago

why 2 hours (Question: 351218.0 )

why will the train take two hours?

Question:

A train approaches a tunnel PQ. Inside the tunnel a dog located at a point that is three-eights of the distance PQ measured from the entrance P. When the train whistles, the dog runs. If the dog moves to the entrance of the tunnel P, the train catches the dog exactly at the entrance. If the dog moves to the exit Q, the train catches the dog at exactly the exit. The ratio of the speed of the train and the speed of the dog is -

Options:
A)

5 : 1

B)

4 : 1

C)

1 : 4

D)

5 : 2

Solution:

Ans: (b)


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