A certain distance is being covered in 28 hours by walking with a speed of 5km/h. if the speed is ncreasad by 2 km then in how much time the same distance will be covered?
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Answer:
Case 1:when speed was 5km/h
=Speed =distance /time
=5km/h=distance/28 h
=distance=5×28
=140 km
Case 2: when speed was increased
=Speed =distance /time
=(5+2)km/h =140km/time
=time=140/7
=20 h
Thus, when speed was increased by 2km/h, 20 hours will be taken to cover a distance of 140km
Correct me if I'm wrong.
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