Solve the problem.
-Doris has a rectangular fish pond 9 by 12 feet. She wants to put grass in a strip of uniform width around the pond. She has enough grass seed for 162 square feet. How wide will the strip be?
A) 3 ft
B) 5 ft
C) 4 ft
D) 5.5 ft

Question

Quizplus · Accepted Answer

The area of the pond is 9 * 12 = 108 square feet. The total area, including the grass, is 108 + 162 = 270 square feet. Let the width of the grass strip be x feet. The dimensions of the new area are (9+2x) by (12+2x). So, (9+2x)(12+2x) = 270. Solving for x gives x = 3 feet.

Solve the Problem. -Doris Has a Rectangular Fish Pond 9 by 12 Feet