An insect crawls on a piller 35m, it ascends 5m in the first minute but slips down 3m in the next minutes if it continous crawling in this way. what time it will take to reach at tha top of the pillar?

Answer 1

Every 1+1=2 minutes it gains 5-3=2 meters. So, after 30 minutes it has moved 30 meters.

In minute 31 it climbs the last 5 meters and is done.

Answer 2

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