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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:
Answer & Solution
Correct Answer:
Option
B
A →____________________← B
Ratio of the speed of trains is given by;
$$\eqalign{
& \frac{{{\text{Speed}}\,{\text{of}}\,{\text{train}}\,A}}{{{\text{Speed}}\,{\text{train}}\,{\text{of}}\,B}} = \frac{{\sqrt B }}{{\sqrt A }} \cr
& = \frac{{\sqrt 9 }}{{\sqrt 4 }} \cr
& = \frac{3}{2} \cr
& = 3:2 \cr} $$
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