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Giselle spent a total of $43 when she went shopping. She spent $14 for socks, $18.75 for a wallet, and bought lunch. When she got home, she had $4 left. How much did she spend for lunch?

  • math -

    Solve for x.

    14 + 18.75 + x + 4 = 43

    36.75 + x = 43

    x = 43 - 36.75

    x = ?

  • math -

    Why do you add the $4? My daughter missed this on a homework sheet because she didn't use the $4. Why should that even be considered?

  • math -

    We're trying to find out how much she spent for lunch. We can account for the rest of the money.

    Another way to work this problem is:

    14 + 18.75 + x = 43 - 4

    You'll get the same answer.

  • math -

    Thanks, but that still makes no sense.

    If she SPENT a TOTAL of $43 which included $14 for socks and $18.75 for a wallet and had $4 LEFT, Why does the $4 even have to be in the equation?

    $43= $14 + $18.75 + LUNCH (X)

  • math -

    I see your point. The question states that she SPENT $43. I suggest you have your daughter ask her teacher.

  • math -

    The $4 only enters the picture if asked ,
    "how much money did she start with"

    it said,
    14 + 18.75 + lunch = 43
    lunch = 43 - 14 - 18.75 = 10.25

    So her lunch cost $10.25

    She started with 43+4 or $47

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