Q. 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 : 1
• B. 3 : 2
• C. 4 : 3
• D. 5 : 4

Correct Answer: B