Cat climb
Geometry
Level
1
A cat fell to the very bottom of a 25 meter well. If he climbs up 10 meters a day, and climbs down 5 meters a day, how many days will it take to exit the well.
The answer is 4.
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The first day the cat climbs up 5 m. The second day it climbs up to 10 m The third day it climbs up to 15 m. The fourth day however he exits the well., This is because he moves 10 m up every day, after the third day once he moves 10 m up he already gets to the top of the well and can exit, thus he does not need to climb down. SO the answer is 4