Asked in
Math and Arithmetic
Brain Teasers and Logic Puzzles
Slugs and Snails

A snail climbs up a wall 20 feet high. Each day the snail climbs 5 feet but each night he slips backwards 4 feet. How many days will iy yake for the snail to get to the top of the wall?

Answer

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April 29, 2010 5:15PM

16 days is the correct answer. The snail can go 5 feet each day... and slides back 4 each night. He will get to the 19th foot on the 15th DAY but will slide back to the 15 foot mark on the 15th NIGHT. He will climb 5 feet on the 16th day, reaching the 20 foot mark.