lali73
lali73
23-02-2021
Mathematics
contestada
60d+65n=2800
50d+45n=2150
Respuesta :
armannarimanyan04
armannarimanyan04
23-02-2021
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
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