SOLUTION: The ratio of the length of a rectangle to its width is 7 : 3.What percent of the perimeter is the width? (A) 43% (B) 30% (C) 25% (D) 15% (E) 10%

Algebra ->  Rectangles -> SOLUTION: The ratio of the length of a rectangle to its width is 7 : 3.What percent of the perimeter is the width? (A) 43% (B) 30% (C) 25% (D) 15% (E) 10%      Log On


   



Question 331769: The ratio of the length of a rectangle to its width is 7 : 3.What percent of the perimeter is the width?
(A) 43% (B) 30% (C) 25% (D) 15% (E) 10%

Answer by privani(34) About Me  (Show Source):
You can put this solution on YOUR website!
Perimeter of a rectangle = 2*width + 2*length.
Assuming length = 7, and width = 3, perimeter is:
2*7 + 2*3 = 14 + 6 = 20
Therefore, percentage of width to the perimeter is:
%283%2F20%29%2A100% = 15%
Answer: (D)