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23 January, 18:47

Rebecca buys some scarves that cost $5 each and 2 purses that cost $12 each. The cost of Rebecca's total purchase is $39. what equation can be used to find n, the number of scarves that Rebecca buys?

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  1. 23 January, 20:19
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    Let n represent the amount of scarves Rebecca buys, and p represent the number of purses Rebecca buys.

    We know that scarves cost $5 each, and purses that cost $12 each. We also know that the cost of Rebecca's entire purchase is 39 dollars.

    So,

    5n + 2p = $39

    However, we were also given that Rebecca buys a total of 2 purses, so we can plug that into the equation.

    5n + 2 (12) = 39

    When simplified, we get:

    5n + 24 = 39

    To simplify even further, we must subtract 24 from both sides of the equation.

    5n = 15

    Finally, we must divide both sides by the coefficient of the variable, or 5.

    n = 3

    Therefore, Rebecca buys 3 scarves.

    However, this problem didn't ask you to solve the equation, therefore the correct answer in this situation is probably one of the ones we started out with, either

    5n + 2 (12) = 39

    or

    5n + 24 = 39
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