Question

A man covers a certain on bike.Had he moved 4kmph faster he would taken 72 minutes less if he moves slow by 4 kmph,he will take 2 hours more to cover the distance what is the distance travelled by him?

Answer 1

Answer:

2t-s=4.

d=t*s

Select appropriate values from options to find d.

Explanation:

d=distance

s=speed

t=time

d=s*t......(1)

(s+4)(t-6/5)=(s-4)(t+2).......(2)

Solving (2),we get

2t-s=4

Select appropriate values of s and t from options and find d=s*t.