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Natalie has 45 dollars to buy chocolate.
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A white chocolate bar cost three dollars and 87 cents.
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And a dark chocolate bar cost three dollars and 59 cents.
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If Natalie buys seven bars of white chocolate for 27 dollars and nine cents, how can she determine the amount of money she has left to buy dark chocolate?
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Natalie has 45 dollars to buy chocolate.
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She is interested in buying white chocolate and dark chocolate.
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Her 45 dollars will have to equal the white chocolate cost plus the dark chocolate cost.
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We know that Natalie spent 27 dollars and nine cents on the white chocolate.
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27 dollars and nine cents plus the amount of dark chocolate has to equal 45 dollars.
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How can we find out what that dark chocolate cost would be?
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We would have to take the money that Natalie started with, subtract what was already spent, the white chocolate.
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And that would leave us with the remaining money.
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Let’s fill in the blanks here.
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Natalie’s starting money was 45 dollars.
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Subtract the money she already spent, the cost of the white chocolate, 27 dollars and nine cents.
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This would be our model for solving the problem.
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Which of the answer choices gives us this?
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Subtract 27 dollars and nine cents from 45.
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There’s only one option that gives these instructions, option c), subtract 27 dollars and nine cents from 45 dollars.