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60d+65n=2800 50d+45n=2150
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8 votes
60d+65n=2800
50d+45n=2150

User Lalaluka
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1 Answer

11 votes
From the second equation we can find that d=43-(9/10)*n
we can put this equation into the first one,
So we have equation 60(43-(9/10)*n)+65n=2800
Solving that we get n=20
60d+65*20=2800
d=25

So the answer is d=25 and n=20
User Michael Garber
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