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31 December, 07:00

Amir has a stand where he sells lemonade for $1.00 per cup and packages of chocolate chip cookies for $1.50. If he earns $280 on his first weekend and sells twice as many cups of lemonade as packages of cookies, how many of each did he sell? Wrote and solve a system of equations.

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  1. 31 December, 09:38
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    160 cups of lemonade and 80 packages of cookies.

    Step-by-step explanation:

    l = lemonade

    c = cookies

    l+1.5c=280

    2c=l

    Substitute.

    3.5c=280

    Simplify.

    c=80

    Substitute into the second equation.

    l=160.

    Plug it back into the equations to check.
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