# Rafi had a board that was 15 1/2 ft long. He cut three pieces off the board that are each 3 7/8 ft long. How much of the board is left?

Feb 23, 2018

The simplest way to solve this is to set up an equation that includes all parts of the problem.

The best equation would look like this:

$15.5 - 3.875 \left(3\right) = x$

$15.5$ being the original length of the board

$3.875 \left(3\right)$ being the length cut off times the number of times being cut off

And $x$ being the final length

All we do from here is to solve.

$15.5 - 11.625 = x$

$3.375 = x$

Simplify and get:

$x = 3 \frac{3}{8} f t .$