Question
Two trains, one from Howrah to Patna and the other from Patna to Howrah , start simultaneously . After they meet , the trains reach their destinations after 9 hours and 16 hours. respectively . The ratio of heir speeds is :
Answer: Option B
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Let us name he trains as A and B . then ,
(A's speed) : (B's speed )
`sqrt(b)` : `sqrt(a)` = `sqrt(16)` : `sqrt(9)` = 4 : 3.
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