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

Explanation:-

A →____________________← B
Ratio of the speed of trains is given by;
(Speed of train A/ Speed train of B) = ^√b/_√a
= ^√9/_√4
= ³/₂
= 3:2.