Question: 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?
Options:
A) $ 14\frac{2}{3}\min $
B) $ 4\min $
C) $ 11\min $
D) $ 9\min $
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Answer:
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