A snail at bottom of a well goes up 8 paper clips each day and slide back 4 paper clips. How many days will the snail take to get out of the well if is 50 paper clips
Answers
Given : A snail at bottom of a well goes up 8 paper clips each day and slide back 4 paper clips . well is 50 paper clips
To find : How many days will the snail take to get out of the well
Solution:
A snail at bottom of a well goes up 8 paper clips each day and slide back 4 paper clips.
=> every day Snail goes up = 8 - 4 = 4 paper clips
on the last time when Snail goes outside well it will not slide back
Hence in n -1 Days snail will go up > 50 - 8
=> 4(n - 1) > 42
=> 4n - 4 > 42
=> 4n > 46
=> n > 11.5
=> n = 12
it will take snail 12 days to get out of the wall
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