SOLUTION: The area of a rectangle is 6720 square feet. The ratio of the width to the length is 7:15. Find the length and the width.

Algebra ->  Surface-area -> SOLUTION: The area of a rectangle is 6720 square feet. The ratio of the width to the length is 7:15. Find the length and the width.      Log On


   

Question 253944: The area of a rectangle is 6720 square feet. The ratio of the width to the length is 7:15. Find the length and the width.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
The area of a rectangle is 6720 square feet.
The ratio of the width to the length is 7:15.
Find the length and the width.
:
Let x = the multiplier
:
15x * 7x = 6720
105x^2 = 6720
x^2 = 6720%2F105
x^2 = 64
x = sqrt%2864%29
x = 8 is the multiplier
then
15*8 = 120 ft is the length
and
7*8 = 56 ft is the width
:
:
Check: 120 * 56 = 6720