how do I find the equation for a math problem?

Question

60 inches of plastic are folded to make a picture frame. The height of the finished frame is 6 inches how long is the picture frame?

Answer 1

Hi Noah, the perimeter of a picture frame is given by: P = 2L + 2W. We know the value for P, 60 inches. We know the value for W, 6 inches. Substitute and solve.

 

60 = 2L + 2 * 6

 

60 = 2L + 12

 

Subtract 12 from both sides:

 

48 = 2L

 

Divide both sides by 2:

 

L = 24

 

The picture frame is 24 inches long by 6 inches high.

 

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