Solve Problems Using Systems of Linear Equations
-A flat rectangular piece of aluminum has a perimeter of 70 inches. The length is 11 inches longer than the width. Find the width.
A) 12 inches
B) 23 inches
C) 34 inches
D) 35 inches

Question

Quizplus · Accepted Answer

The perimeter of a rectangle is given by 2(length + width). Let the width be x inches. Then, the length is x + 11 inches. The equation for the perimeter is 2(x + (x + 11)) = 70. Solving for x gives the width as 12 inches.