SOLUTION: The length of a rectangle is 7.6 cm more than 3 times the width. If the perimeter of the rectangle is 56.8 cm, what are its dimensions? I needed help setting up this problem & a

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Question 444336: The length of a rectangle is 7.6 cm more than 3 times the width. If the perimeter of the rectangle is 56.8 cm, what are its dimensions?
I needed help setting up this problem & answering it
Answer by unlockmath(1688) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
Let's have width be represented by x and length as 3x. Now we can set up our equation as:
2x+2(3x)=56.8
Combine like terms:
8x=56.8
Divide by 8 to get:
x=7.1 cm
So we know the width is 7.1 cm and
the height is 21.3 cm
Make sense?
RJ
www.math-unlock.com