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Karolina [17]
3 years ago
12

I need help again this is really hard and I don't understand how to do it

Mathematics
2 answers:
olga_2 [115]3 years ago
5 0
Use algebra Set up a system of equations.
Let x = number of pounds of chicken he sold 
and y = number of pounds of pork 
So one equation is 
x + y = 15....... (1)
And the other equation is the amount of money he made :-
3x + 4y = 50....(2)

Now solve this sytem of 2 equations:-

multiply the eqaution (1) by -3:-

-3x - 3y = -45 .......(3)
3x  + 4y = 50 ........(2)   Now add (3) and (2);-

y = 5      so he sold 5 pounds of pork 

and substituting in equation (1)

x + 5 = 15 
x = 10 

So he sold 5 pounds of pork and 10 pounsd of chicken.
Tems11 [23]3 years ago
4 0
C=10 & P=5
3C+4P=50
C+P=15
Solve
3C+4P=50
3C+3P=45
Subtract
P=5
Substitute in equation 2
C+P=15
C+5=15
C=10
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