SOLUTION: The lenght of a rectangle is 5cm longer than three times its width. The perimeter is 74cm. Find the width and lenght.

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Question 153049: The lenght of a rectangle is 5cm longer than three times its width. The perimeter is 74cm. Find the width and lenght.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
"lenght of a rectangle is 5cm longer than three times its width"
1.L=5%2B3W
"The perimeter is 74cm."
2.2L%2B2W=74
Use eq. 1 in eq. 2 and solve for W.
1.L=5%2B3W
"The perimeter is 74cm."
2.2L%2B2W=74
2%285%2B3W%29%2B2W=74
10%2B6W%2B2W=74
8W=64
W=8
From 1,
1.L=5%2B3W
L=5%2B3%288%29
L=5%2B24
L=29