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Question

A man walks with speed 15 km/hr instead of 12 km/hr and covers 20 km more distance. Find the distance covered by him with speed 15 km/hr.

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Solution

Dear Student,
Considering the time period to be equal ,
Walking with a speed of 12 km/hr , x km is covered.
Since time period is equal,x/12 = (x+20)/1515x = 12x + 24015x - 12x = 2403x = 240x = 80 km
Hence the distance covered by the man with a speed of 15 km/hr is 80+20= 100 km
regards.

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