SOLUTION: The width of a rectangular is 5 ft less than the length. The area of the rectangle is 336ft^2 . Find the length L and width W of the rectangle.

Algebra ->  Length-and-distance -> SOLUTION: The width of a rectangular is 5 ft less than the length. The area of the rectangle is 336ft^2 . Find the length L and width W of the rectangle.       Log On


   

Question 1175574: The width of a rectangular is 5 ft less than the length. The area of the rectangle is 336ft^2 . Find the length L and width W of the rectangle.
Answer by ikleyn(52787) About Me  (Show Source):
You can put this solution on YOUR website!
.

    W*(W+5) = 336  ft^2.


    W^2 + 5w - 336 = 0

Factor

    (W+21)*(W-16) = 0


W= 16 is the only positive root.


ANSWER.  W = 16 ft.  L = 21 ft.

Solved.