45. The area of a rectangular piece of poster board is 220 square inches. A rectangular photograph that is twice as tall as it is wide is glued to the poster board so that the poster board extends 3 inches beyond the photograph on the top and bottom and 2 inches beyond the photograph on the left and right sides, as shown below. How many inches wide is the photograph?
Your Answer is
Correct Answer is C
Explanation
Assuming that the width of the photo is x and the length is 2x, then the width of the photo frame is (x+4) and the length is (2x+6). It can be known from the question that (x+4)(2x+6)=220, and the solution is x =7 so choose C