A man reduces his speed from 20 kmph to 18 kmph. So, he takes 8 minutes more than the normal time. What is the distance traveled by him?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 24 km.
Let normal time = t hours
18(t + 8/60) = 20t
⇒ 18t + 144/60 = 20t
⇒ 2t = 144/60 = 12/5
⇒ t = 6/5 hours
Distance = 20 × 6/5 = 24 km