Question 114009
2c+1b=18.75 multiply this equation by -2 & add them
3c+2b=29.50
-4c-2b=-37.50
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-c=-8
c=8 price if the coffee is $8.00
2*8+b=18.75
16+b=18.75
b=18.75-16
b=2.75 price of the butter.
proof
3*8+2*2.75=29.50
24+5.50=29.50
29.50=29.50