SOLUTION: The frame of a picture is 28cm by 32cm outside and is of the uniform width. What is the width of the frame if 192cm^2 of the picture shows?

Question 32024: The frame of a picture is 28cm by 32cm outside and is of the uniform width. What is the width of the frame if 192cm^2 of the picture shows?
Answer by Paul(988) (Show Source): You can put this solution on YOUR website!
Let the width be x:
28+x and 32+x
Equation:
(28-2x)(32-2x)=192
89-120x+4x^2=192

Use the quardratic formula:
-->Remove negative:

x=22
Hence, the unifrom width is 22cm.
Paul.
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