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A man sets out to cycle from points P to...

A man sets out to cycle from points P to Q and at the same time another man starts to cycle from points Q to P. After passing each other, they complete their journeys in 9 h and 4 h, respectively. Find the ratio of speeds of 1st man to that of 2nd man.

A

`3 : 2`

B

`9 : 4`

C

`4 : 9`

D

`2 : 3`

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