A person covers a distance 100 kms in 10 hr, partly by walking at 7 km per hr and rest by running at 12 km per hr. Find the distance covered in each part.
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Step-by-step explanation:
let the distances be x and 100-x
walking distance=x
running distance=100-x
walking speed=7kmph
running speed=12kmph
(x/7)+(100-x)/12=10
12x-7x+700=840
5x=140
x=140/5=28km
100-x=100-28=72km
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