Mandana is ordering new tile for her kitchen floor. The area of the floor is 119.4 square feet, and she wants to order between 15% and 20% e

Question

Mandana is ordering new tile for her kitchen floor. The area of the floor is 119.4 square feet, and she wants to order between 15% and 20% extra of the materials. Which of the following is a reasonable amount of tile for Mandana to order?

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Anna 3 months 2022-02-11T08:56:03+00:00 1 Answer 0 views 0

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    2022-02-11T08:57:56+00:00

    Question:

    Mandana is ordering new tile for her kitchen floor. The area of the floor is 119.9 square feet, and she wants to order between 15% and 20% extra of the materials. Which of the following is a reasonable amount of tile for Mandana to order?

    A.
    134 square feet

    B.
    140 square feet

    C.
    137 square feet

    D.
    145 square feet

    Answer:

    B.  140 square feet   is a reasonable amount of tile for Mandana to order

    Step-by-step explanation:

    Total area of the floor  = 119.4 square feet

    If Mandana is ordering 15% extra, the the tile will be

    =  119.4 +  15% 119.4

    =  [tex]119.4 + \frac{15}{100} \times 119.4[/tex]

    = [tex]119.4 + 0.15 \times 119. 4[/tex]

    = 119.4 + 17.91

    =137.31  square feet

    If Mandana is ordering 20% extra, the the tile will be

    =  119.4 +  20% 119.4b

    = [tex]119.4 + \frac{20}{100} \times 119.4[/tex]

    = [tex]119.4 + 0.2 \times 119. 4[/tex]

    = 119.4  + 23.88

    = 143.28  square feet

    Thus from the options

    134<  137<  137.31 <  140< 143.28<  145

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