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3 votes
A photo 5 inches wide and 8 inches long is enlarged.

How wide is the new photo if it is (1)12 inches; (2)20 inches; (3)10 inches long?

2 Answers

4 votes
1. Let original dimensions be W1 and L1
New dimensions designated as W2 and L2

Equation: W2/W1=L2/L1 ..... A equal proportion

Thus...

(1) W2/5=12/8. (2) W2/5=20/8
W2= 5(12/8) W2=5(20/8)
W2=5(1.5) W2=5(2.5)
W2=7.5" W2=12.5"

(3) W2/5=10/8
W2=5(10/8)
W2=5(1.25)
W2=6.25"
User Andrewjamesbowen
by
7.7k points
4 votes
1. 7.5 inches
2. 12.5 inches
3. 6.25 inches
User Adam Mlodzinski
by
8.1k points

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