a) 35 minutes
b) 33 minutes
c) 37 minutes
d) 40 minutes
Answer: c
Explanation: Monkey climbs 6m in 1st minute and slips down 3 m in next minute
i.e. Monkey climbs 3 meter in 2 minute then he climbs in one minute,
= $$\frac{3}{2}$$ m.
But in the last minute he climbs 6 m as he gets on the top so there is no slip.
Time required = $$2 \times \frac{{54}}{3} + \frac{6}{6}$$ = 37 minutes
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