if the length of a board is 2 1/2 feet, what is the length of 20 boards?
2 1/2 = 2.5
10 * 2.5 = ????
20 boards, Chris.
One board is 2.5 feet. If you have 20 of those boards, you have 20 x 2.5 = 50 feet total length.
.
start by converting 2 1/2 into a proper fraction -> 5/2
20*5/2=50
