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Two trains started at the same time, one...

Two trains started at the same time, one from A to B and the other from B to A. If they arrived at B and A respectively 4 hours and 9 hours after they passed each other, the ratio of the speed of the two trains was

A

`2:2`

B

`3:2`

C

`4:3`

D

`5:4`

Text Solution

Verified by Experts

The correct Answer is:
B
`("Speed of A")/("Speed of B") = sqrt(("time of B")/("time of A"))`
`sqrt(9/4) =3/2`
Speed of A : Speed of B = 3 : 2
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