Solve by setting up the proper equation to describe the facts given and then carrying out the mathematical calculations to solve for the unknown variable(s).

Question

The length of a rectangle is 3 times the width. The difference between the length and the width is 8 feet. Determine the rectangle’s length

Answer 1

let the width be x
then the length is 3x

3x - x = 8
2x = 8
x = 4

width is 4 ft
length is 12 ft