A man travel from village to the postoffice at the rate of 25km/hr and walked back at the rate of 4km/hr if the whole journey took 5 hours 48 minutesv, find the distance of the post office from the village
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Average speed = 2ab/(a+b) here a=25 b=4
= 2x25x4/(25+4)=200/29 km/hr.
Distance covered in 5 hours 48 minutes
= Speed x time = (200/29)x (29/5) Distance covered in 5 hours 48 minutes = 40kms
Distance of the post office from the village = (40/2)=20 km.........
So your answer is 20km........
hope it helps......
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