question_answer

A man covered a certain distance at some speed. Had he moved 3 km per hour faster, he would have taken 40 minutes less. If he moved 2 km per hour slower, he would have taken 40 minutes more. The distance (in km) is:

A) 20

B) 35

C)  \[36\frac{2}{3}\]

D)  40

E) None of these