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 speeds of the two trains was

2 : 1

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3 : 2

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4 : 34

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5 : 4

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Solution

The correct option is B $3 : 2$
Ratio of speed of two trains is given as:
$\frac{S p e e d o f A}{S p e e d o f B} = \sqrt{\frac{T i m e o f B}{T i m e o f A}}$
$= \sqrt{\frac{9}{4}}$
$= \frac{3}{2}$
Therefore ratio is $3 : 2$

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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 speeds of the two trains was

The correct option is B 3:2Ratio of speed of two trains is given as:Speed of ASpeed of B=√Time of BTime of A =√94 =32Therefore ratio is 3:2

The correct option is B $3 : 2$
Ratio of speed of two trains is given as:
$\frac{S p e e d o f A}{S p e e d o f B} = \sqrt{\frac{T i m e o f B}{T i m e o f A}}$
$= \sqrt{\frac{9}{4}}$
$= \frac{3}{2}$
Therefore ratio is $3 : 2$