SOLUTION: You have 15 pounds of a peanuts and cashews mixture that sells for 8 dollars a pound. how many pounds of peanuts worth 6 dollars a pounds would you have to add to make a mixture wo

Question 907158: You have 15 pounds of a peanuts and cashews mixture that sells for 8 dollars a pound. how many pounds of peanuts worth 6 dollars a pounds would you have to add to make a mixture worth 7.50 a pound
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
We have 15 lb of $8 blend
We want to add some $6 blend to make $ 7.50 blend
0.06*x+0.08*15=0.075(15+x)
0.06*x+1.2=1.125+0.075x
0.06x-0.075x=1.125-1.2
-0.015x=-0.075
x=5.0 lb at $6 (0.3) is added to 15 lb at $8(1.2) to make $7.50 of 20.0 lb(1.5)
check
0.06*5.0+0.08*15=0.075(15+5.0)
0.3+1.2=0.075(20.0)
1.5=1.5
ok

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