# SOLUTION: Compute the dimensions of a rectangular flower garden with a perimeter of 250m and with length that exceeds three times its width by 5. pls help. :(

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 Question 290664: Compute the dimensions of a rectangular flower garden with a perimeter of 250m and with length that exceeds three times its width by 5. pls help. :(Answer by blwinbbbles(106)   (Show Source): You can put this solution on YOUR website!OK start with what you know: Use l for length and w for width perimeter is the outside distance around the rectangle So: Since there are 2 lengths and 2 widths on a rectangle then 2w + 2l = 250 and we know that length is 5 more than 3 times the width so: l = 3w +5 Now use substitution: 2w + 2(3w + 5) = 250 solve: 2w + 6w + 10 = 250 subtract 10 from both sides and add the w's together 8w = 240 divide by 8 w = 30 so if w = 30 then length is l = 3W + 5 l = 3(30) + 5 l = 90 +5 l = 95 So your answer is width is 30m and length is 95m Hope this helps