A train having a length of 1 4 mile is travelling at a speed of 75 mph It enters a tunnel 3 1 2 mile...........

Quantitative Aptitude ( CCS) Problems on trains

A train having a length of 1/4 mile, is travelling at a speed of 75 mph. It enters a tunnel 3 1/2 miles long. How long does it take the train to pass through the tunnel from the moment the front enters to the moment the rear emerges?

3 min.

4.2 min.

3.4 min.

5.5 min.

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Explanation:

Distance =(3 1/2 + 1/4)

=(7/2 + 1/4) = 15/4 miles
Speed =75 mph
Time =(15/4) /75 = 1/20 hr
=1/20 × 60 = 3 minutes

Hence, option 3 is the correct answer.

By: Amit Kumar

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A train having a length of 1 4 mile is travelling at a speed of 75 mph It enters a tunnel 3 1 2 mile...........

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Explanation:

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