Question

A man covered a certain distance at some speed. If he had moved 3 kmph faster, he would have taken 40 minutes less. If he had moved 2 kmph slower, he would have taken 40 minutes more. What is the distance in km?

Answer 1

Answer:

40 km

Explanation:

let speed be s and time req. be t then u will get 2 equations

40 min = 40/60 = 2/3 hr

speed (s) * time (t) =distance (d)

1:- ( s+3 )* [t - (2/3)] = d

2:- (s-2)* [t + (2/3)] =d

by solving the equations

s=12 km/h and t =10/3 h

&d= 40 km

Answer 2

Answer:

Answer in the attachment