(This is an "inchworm" - which is really a caterpillar...not a worm.)
A worm trying to climb up the steep, slippery wall of a dam 20 feet high, manages to climb 5 feet each day. However, during the night it slips back 4 feet.
How long will it take for the worm to reach the top?
Come back tomorrow to see if you got the correct answer!
(This word problem is brought to you by Mango Math.)
*Inchworms are the larvae of moths that belong to the family Geometridae.*