SOLUTION: Sue earned $2 for each CD she sells and $2.50 for each DVD she sells. Sue earned $950 last week selling CDs and DVDs. Write an equation to represent the number of CDs (c) and DVDs
Question 611015: Sue earned $2 for each CD she sells and $2.50 for each DVD she sells. Sue earned $950 last week selling CDs and DVDs. Write an equation to represent the number of CDs (c) and DVDs (d) Sue sold last week given that she earned $950. Found 2 solutions by stanbon, ashipm01:Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Sue earned $2 for each CD she sells and $2.50 for each DVD she sells. Sue earned $950 last week selling CDs and DVDs. Write an equation to represent the number of CDs (c) and DVDs (d) Sue sold last week given that she earned $950.
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Equation:
value + value = value
2C + 2.5D = 950
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Cheers,
Stan H.
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You can put this solution on YOUR website! There is not much work to show here, but what needs to be done is to find the terms in the description and then use them to express what was being stated.
The three terms in this description are the number CDs sold, the number of DVDs sold, and the earnings amount. So if you represent the number of CDs sold by the variable c and the number of DVDs sold by the variable d, then you have something similar to the following:
This can also be represented as a function of two variables by gathering all terms on one side of the equation as such:
That last step is not completely necessary as the problem description is simply asking for an equation, which the first form is.
The number of CDs sold (c) is multiplied by 2 because that is how much each CD is sold for. Likewise, the number of DVDs (d) sold is multiplied by 2.5 because that is how much each of the DVDs go for. And the sum of these two values results in the total earnings.
(
