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13 May, 01:41

stan cut two pieces of crown molding for his family room that were 8 feet 7 inches and 12 feet 11 inches. what was the total length of the molding?

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  1. 13 May, 02:26
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    The total length of the molding is 21 feet and 6 inches

    Step-by-step explanation:

    * Lets explain how to solve the problem

    - The length of the two pieces are 8 feet 7 inches and 12 feet 11 inches

    - Each foot has 12 inches

    - Lets change the lengths of the two pieces to inch

    # First piece 8 feet 7 inches

    ∵ 1 foot = 12 inches

    ∴ 8 feet 7 inches = 8 * 12 + 7

    ∴ 8 feet 7 inches = 96 + 7

    ∴ 8 feet 7 inches = 103 inches

    # Second piece 12 feet 11 inches

    ∵ 1 foot = 12 inches

    ∴ 8 feet 7 inches = 12 * 12 + 11

    ∴ 8 feet 7 inches = 144 + 11

    ∴ 8 feet 7 inches = 155 inches

    - To find the total length add the two answers

    ∴ The total length of the molding = 103 + 155 = 258 inches

    - Divide the answer by 12 to change it to feet

    ∵ 258 : 12 = 21.5 feet

    - To change it to feet and inch multiply 0.5 feet by 12

    ∵ 0.5 * 12 = 6 inches

    ∴ The total length of the molding is 21 feet and 6 inches
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