SOLUTION: How many pounds of a $1.20 per pound nut mixture must be mixed with two pounds ofa 90 cents per pound mixture to produce a mixture that sells for $1.00 per pound? A) 0.5 B) 1.0

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Question 768199: How many pounds of a $1.20 per pound nut mixture must be mixed with two pounds ofa 90 cents per pound mixture to produce a mixture that sells for $1.00 per pound?
A) 0.5
B) 1.0
C) 1.5
D) 2.0
E) 2.5
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
x of 0.9 dollar per pound
y of 1.20 dollar per pound

%280.9x%2B1.20y%29%2F%28x%2By%29=1.00 dollars per pound
If let x=2, then
%28%280.9%29%2A2%2B1.20y%29%2F%282%2By%29=1.00
1.8%2B1.20y=y%2B2
1.20y-y=2-1.8
0.2y=0.2
y=1