1.

A man travelled from the village to the post office at the rate of 25 kmph and walked back at the rate of 4 kmph. If the whole journey took 5 hours 48 minutes, find the distance of the post office fro

Answer»

20 km



Average speed = (2XY/X+Y) kmph = {(2 x 25 x 4)/25+4} = 200/29 kmph
DISTANCE travelled in 5 hours 48 minutes i.e. (200/29)X(29/5) = 40 km.
Hence, Distance of the post OFFICE from the village = 40/2 = 20 km.



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