Question

While covering a distance of 24km, a man noticed that after walking for 1 hour and 40 min., the distance covered by him was 5/7 of remaining distance. what was his speed in metres per second?

Answer 1

1+2/3h
d =5/7*(24-d)
7d=120-5d
312d=120
D=10
10*3/5 =6

Answer 2

Explanation:

D=5/7(24-D)

7D=120-5D

12D=120

D=10

speed= distance/time

10x1000/6000 ( according to question we have to find out it in m/s ....)

ans: 1 full 2/3 m/sec