SOLUTION: The length of a rectangular playing field is 5ft less than twice its width. if the perimeter of theplaying field is 230 ft. find the length and width of the field.

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Question 67093: The length of a rectangular playing field is 5ft less than twice its width. if the perimeter of theplaying field is 230 ft. find the length and width of the field.
Answer by Zoop(21) About Me  (Show Source):
You can put this solution on YOUR website!
Let's take X as the width and 2x-5 as the length.
That means:
2%28x%29%2B2%282x-5%29=230
(we multiplied by 2 because perimeter contains 2 of the length and 2 of the width)
That becomes:
2x%2B4x-10=230
Which simplifies to:
6x-10=230,6x=240,x=40;
That means that the width is 40 and the length is 75 (40*2-5)
Done. =)