Question
A man traveled 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 from the village.
A man traveled 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 from the village.
Answer: Option C
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Average speed = { 2xy /(x+y) } km/hr ={ 2*25*4 /(25+4) } km/hr = 200/29 km/hr
Distance traveled in 5 hours 48 minutes i.e., 29/5 hrs. = { 200/29 * 29/5 } km = 40 km
Distance of the post-office from the village ={ 40/2 } = 20 km
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