SOLUTION: Solve using the five-step problem-solving process. Show all steps necessary to arrive at your solution. A rectangular walkway is 18 feet longer than it is wide. If the area of the

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Solve using the five-step problem-solving process. Show all steps necessary to arrive at your solution. A rectangular walkway is 18 feet longer than it is wide. If the area of the      Log On


   

Question 303062: Solve using the five-step problem-solving process. Show all steps necessary to arrive at your solution.
A rectangular walkway is 18 feet longer than it is wide. If the area of the walkway is 88 square feet, find the length and the width.
need help with this algebra problem
I know that a=lw BUT from here i am lost
please help me.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
A rectangular walkway is 18 feet longer than it is wide. If the area of the walkway is 88 square feet, find the length and the width.

let the width be x
the length will be x+18
The area = L*W
x(x+18)=88
x^2+18x=88
x^2+18x-88=0
X^2+22x-4x-88=0
x(x+22)-4(x+22)=0
(x+22)(x-4)=0
x= -22 OR x=4
Thw width cannot be begative
so the width is 4 feet
Ananth