Question

a woman walks A certain distance in 84 minutes seat covers two third of it at 4 km per hour and 25 km per hour find the total distance 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