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? Choose the correct option:  A) 36  B) 38  C) 40  D) 42  E) 45
Explanation:   speed=2v1v2/v1−v2   =2×3×23−2=12 km/H=hr   distance =vt1(1+v/v1)   =12×40/60(1+12/3)=40 km   ANSWER IS 40
<result>C</result>
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?