Posted by ALISON15 on .
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).
The length of a rectangle is 3 times the width. The difference between the length and the width is 8 feet. Determine the rectangleâ€™s length

ALGEBRA 
Reiny,
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