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.
$S i n c e t i m e p e r i o d i s e q u a l, x / 12 = (x + 20) / 15 15 x = 12 x + 240 15 x - 12 x = 240 3 x = 240 x = 80 k m$
Hence the distance covered by the man with a speed of 15 km/hr is 80+20= 100 km
regards.

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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.

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.