Question

A women walks a certain distance in 84 minutes she covers two thirds of it at 4km/hr and the rest at 5 km/hr .Find the total distance she covered

Answer 1

Let total distance covered be D

Total time taken= 84min= 7/5 hrs

Time taken= distance./ speed

2D/3(4) +D/ 3(5) =7/5

(10D+4D)5= 21(20)

70D= 420

D= 420/70

D= 6

Therefore total distance covered = 6km

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