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A drunkard is walking along a straight r...

A drunkard is walking along a straight road. He takes five steps forward and three steps backward and so on. Each step is `1 m` long and takes `1 s`. There is a pit on the road `11 m`, away from the starting point. The drunkard will fall into the pit after.

A

29s

B

21s

C

37s

D

31s

Text Solution

Verified by Experts

The correct Answer is:
A
After each 8 steps (5 forward+3 backward)
he travels a distance 2m. So in `(8xx3=24)` steps distance travelled =6m
and after as soon as he completes next 5 steps he will fall in the pit.
so total steps travelled `=(8xx3)+5=29` steps
time=29sec
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