Question

The distance between points X and Y is in the ratio of 16:9 compared to the distance between points Y and Z. A person P travels from X to Y at a speed of '4y'km/h and from Y to Z at a speed of '5y'km/h. What is the ratio of the time taken by P to travel from X to Y and from Y to Z?

A 21:6
B 18:17
C 20:9
D 19:3
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