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11 March, 00:30

Pamela is building a 2 wooden decks. Each deck needs 25 pieces of wood and each piece of wood needs 8 screws. If Pamela already have 40 screws, how many more screws does she need to buy?

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  1. 11 March, 03:34
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    360 screws

    Step-by-step explanation:

    First we need to determine how many screws she needs for the 2 decks

    We will determine the number of screws for 1 deck

    1 deck uses 25 pieces of wood

    25 pieces of wood * 8 screws / piece of wood = 200

    200 screws per deck

    She is building 2 decks

    2 * 200 = 400

    400 screws for the 2 decks

    She has 40 screws

    400 screws she needs - 40 screws she has = 360 screws she still needs
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