Math ASAP

Bonnie has a rectangular photographic print that is 5 inches wide and 7 inches long. If she multiplies both the length and width by 1.5, how will the perimeter of the print increase?

asked by alex
  1. 1.5 * 5 = ?

    1.5 * 7 = ?

    1.5 * 5 *2 + 1.5 * 7 *2 - 24 = ?

    fyi it equals 15 + 21 - 24

    so 36 - 24 = (12)

    posted by Knights
  2. 24 is the original perimeter.

    P = 2l + 2w

    Just wanted to add that information.

    You could also just multiply the 24 times 1.5 to get the new perimeter of 36 and then take the difference. The math is a little easier.

    posted by JJ

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