Question

The perimeter of a square is 120
cm. The length of a rectangle is 5 cm more than the side of the square, and the breadth of the rectangle is 6 cm less than the side of the square. The difference between the areas of the square and the rectangle is approximately what percent of the area of ​​the rectangle? 

A 6.2%
B 8%
C 6.5%
D 7%
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