A man is walking at a speed of 10 kmph. After every km, he takes rest for 5 minutes. How much time will he take to cover a distance of 5 km ?

A. 60 min

B. 50 min

C. 55 min

D. 70 min

Answer: Option B

Solution(By Examveda Team)

Time taken by man if he did not stop :
$$\eqalign{ & = \frac{{5{\text{ km}}}}{{10{\text{ kmph}}}} \cr & = \frac{1}{2}{\text{hr}} \cr & = 30{\text{ min}} \cr} $$
$$\because $$ Man takes rest for 5 minutes on each km
Total rest time = 5 × 4 = 20 min
Total travelling time :
= 30 min + 20 min
= 50 min