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9 April, 07:33

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?

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Answers (2)
  1. 9 April, 08:31
    0
    1. 7.5 inches

    2. 12.5 inches

    3. 6.25 inches
  2. 9 April, 10:55
    0
    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"
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