Train A crosses a pole in 25 seconds and another Train B crosses a pole in 1 minute and 15 seconds L...........

Quantitative Aptitude ( CCS) Problems on trains

Train-A crosses a pole in 25 seconds and another Train-B crosses a pole in 1 minute and 15 seconds. Length of train-A is half length of train-B. What is the respective ratio between the speed of Train-A and Train-B ?

3 : 2

3 : 4

4 : 3

3 : 1

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Explanation:

If the length of train A be x meter, then length of
train B = 2x meter.
When a train crosses a pole, it covers a distance equal to its own length.
∴ Required ratio = x/25 : 2x/75
= 1/25 × 75 : 2/75 × 75
= 3 : 2