A worm is at the bottom of a forty foot hole. It can crawl upwards at the rate of four feet in one day, but at night, it slips back three feet. At this rate, how long will it take the worm to crawl out of the hole?
Solution
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The Best In Mahjong Games and Puzzles
from A Daily Brain Teaser http://ift.tt/1pc5JOn
3d wooden brain teasers from craftypuzzles.com
Solution
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The Best In Mahjong Games and Puzzles
from A Daily Brain Teaser http://ift.tt/1pc5JOn
3d wooden brain teasers from craftypuzzles.com
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