Two trains, one from Howrah to Patna , and other from Patna to Howrah, start simultaneously.After they meet, the trains reach their destinations after 9 h and 16 h, respectively.The ratio of their speed is

2 : 3

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4 : 3

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6 : 7

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9 : 6

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Solution

The correct option is B $4 : 3$
When train reach after they met in $t_{1}$ and $t_{2}$ hr
$\frac{S p e e d o f t r a i n I}{S p e e d o f t r a i n I I} = \sqrt{\frac{t_{2}}{t_{1}}} = \sqrt{\frac{16}{9}} = 4 : 3$

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Two trains, one from Howrah to Patna , and other from Patna to Howrah, start simultaneously.After they meet, the trains reach their destinations after 9 h and 16 h, respectively.The ratio of their speed is

The correct option is B 4:3When train reach after they met in t1 and t2 hr SpeedoftrainISpeedoftrainII=√t2t1=√169=4:3

The correct option is B $4 : 3$
When train reach after they met in $t_{1}$ and $t_{2}$ hr
$\frac{S p e e d o f t r a i n I}{S p e e d o f t r a i n I I} = \sqrt{\frac{t_{2}}{t_{1}}} = \sqrt{\frac{16}{9}} = 4 : 3$