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28 June, 08:10

Min Jee wants to build a small patio using either brick or paver stones.

It will be 70 inches long and 49 inches wide. Each brick covers an area of 3 1/2 inches by 7 1/2 inches, and cost $0.59.

Each paver covers an areas 8.4 inches by 8.4 inches and costs $1.88. What would be less expensive to use, and by how much?

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  1. 28 June, 08:28
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    Brick = 3.5 in by 7.5 in and costs $0.59

    Paver = 8.4 in by 8.4 in and costs $1.88

    The small patio's area = 3430 square inches

    The Area of 1 Brick = 26.25 square inches

    The Area of 1 Paver = 70.56 square inches

    The # of Bricks to complete the Patio will be:

    Patio's Area / the Area of 1 Brick = # of Bricks to complete the patio

    3430 square inches / 26.25 square inches = 130.67 = 131

    Then, multiply the # of Bricks to complete the patio by the amount that 1 brick costs:

    131 * $0.59 = $77.29

    It will take $77.29 to complete the Patio with bricks.

    The # of Pavers to complete the Patio:

    Patio's Area / the Area of 1 Paver = # of Pavers to complete the Patio

    3430 square inches / 70.56 square inches = 48.6 = 49

    Then, multiply the # of Pavers to complete the patio by the amount that 1 Paver costs:

    49 * $1.88 = $92.12

    Cost of Bricks to complete Patio = $77.29

    Cost of Pavers to complete Patio = $92.12

    To conclude, Bricks would cost less by $14.83.
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