Two trains one from Howrah to Patna and the other from Patna to Howrah start simultaneously After th...........

Quantitative Aptitude (SBI-CL) Problems on trains

Two, trains, one from Howrah to Patna and the other from Patna to Howrah, start simultaneously. After they meet, the trains reach their destinations after 9 hours and 16 hours respectively. The ratio of their speeds is?

1: 2

4 : 3

7 : 8

3 : 4

Explanation:

Let us name the trains as A and B. Then,
trick formula
(A’s speed) : (B’s speed) = square root of b : square-root of a =square-root of 16 : square-root of 9 = 4 : 3.

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