question_answer

A monkey could climb 6 m of a round pole in one minute but slipped 3 m in the next minute. What time will it take to reach the top of the pole which is 12 m long?

A) \[14\frac{2}{3}\min \]                

B) \[4\,\,\min \]

C) \[11\,\,\min \]                

D) \[9\,\,\min \]

Correct Answer: D

Solution :

Since, monkey climbs 6 m in 1 min but in the next minute monkey slips 3 m.

Therefore, in 2 min, 3 m height is climbed.

\[\therefore \]12m distance will be covered in \[2\times 4=8\]min.

But 1 min was wasted in slipping.

\[\therefore \]Total time = 8 +1= 9 min