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Q 1464512455.     Two trains start at the same time from points `x` and `y` towards each other and after crossing, they take `9` h and `4` h in reaching points `y` and `x`, respectively.
Find the ratio of speeds of the `1`st train to that of the `2`nd train.
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)