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Q: Two trains start at the same time, one from A to B and the other from B to A. if they arrive at B and A respectively 5 hours and 20 hours after they passed each other, what is the ratio of speeds of the train starting from A and that of the one starting from B?
A. 4:3 B. 1: 2
C. 2:1 D. 3:1

Answer and Explanation

Answer:2:1

Explanation:
S1/S2 = √t1 / √t2
=> S1/S2 = √20 / √5 = √4 / 1
=> 2/1
One train travels twice as fast as the other

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