Question

Find the length of a picture frame whose width is 3 inches and whose proportions are the same as a 9-inch wide by 15-inch long picture frame.

Answer 1

As the picture frame is proportional to the long one
Let x1=kx x1 is the width of the longer frame and x is the width of the shorter frame
9=3k
k=3
Similarly
y1=ky
15=3y
y=5
The length is 5

Answer 2

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