An appliance dealer sold 40 tv sets during a special sale. Some of the sets were black-and – white models each selling at $119. The rest wer

Question

An appliance dealer sold 40 tv sets during a special sale. Some of the sets were black-and – white models each selling at $119. The rest were color sets at $319 each. The sale brought in $10,360. How many color sets were sold?

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Eva 2 weeks 2021-09-11T01:50:59+00:00 1 Answer 0

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    2021-09-11T01:52:13+00:00

    Answer: 28 color sets were sold

    Step-by-step explanation:

    Let x represent the number of black-and – white models that were sold.

    Let y represent the number of color sets that were sold.

    An appliance dealer sold 40 tv sets during a special sale. Some of the sets were black-and – white models while the rest were color sets.. It means that

    x + y = 40

    Black-and – white models each sold for $119. Color sets sold at $319each. The sale brought in $10,360. It means that

    119x + 319y = 10360 – – – – – — – – – – -1

    Substituting x = 40 – y into equation 1, it becomes

    119(40 – y) + 319y = 10360

    4760 – 119y + 319y = 10360

    – 119y + 319y = 10360 – 4760

    200y = 5600

    y = 5600/200

    y = 28

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