A frog is in the bottom of a 20m deep well. every days it jumps 5 metres upwards and falls 4 metres down. how many dauys will it take for the frog to get out of the well?
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It would be out by the end of the 16th day(or 17th)
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Pranjal01:
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In one day the frog climbs net distance of (5-4)
=1m
when at the last the frog will reach the top of the well it will not fall down so it will cover a distance of (20-5)m = 15m by climbing and falling, so in one day it climbs 1m so it will climb 15m in 15 days but we have to add 1 day because on the 16th day it will not fall ,so it will take the frog 16 days to reach the top of the well.
=1m
when at the last the frog will reach the top of the well it will not fall down so it will cover a distance of (20-5)m = 15m by climbing and falling, so in one day it climbs 1m so it will climb 15m in 15 days but we have to add 1 day because on the 16th day it will not fall ,so it will take the frog 16 days to reach the top of the well.
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