SOLUTION: Grain worth 65 cents per pound was mixed with grain worth 90 cents per pound to produce 20 pounds of a mixture worth 80 cents per pound. Find how many pounds of each was used
Algebra.Com
Question 160634: Grain worth 65 cents per pound was mixed with grain worth 90 cents per pound to produce 20 pounds of a mixture worth 80 cents per pound. Find how many pounds of each was used
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
65x+90(20-x)=80*20
65x+1800-90x=1600
-25x=1600-1800
-25x=-200
x=-200/-25
x=8 pounds of 65 cent grain.
20-8=12 pounds of 90 cent grain.
Proof:
65*8+90*12=1600
520+1080=1600
1600=1600
RELATED QUESTIONS
Grain worth 65 cents per pond was mixed with grain worth 90 cents per pounds to produce... (answered by josgarithmetic)
Can you please take a look at these 3 problems? They're brain rattling!
1. A carpentry (answered by stanbon)
A store manager mixes candy worth 90 cents per pound with gumdrops worth $1.50 per pound... (answered by scott8148)
How many pounds of candy worth 50 cents a pound must be mixed with how many pounds of... (answered by josmiceli)
How many pounds of chocolate worth $1.20 a pound must be mixed with 10 pounds of... (answered by likaaka)
How many pounds of chocolate worth $1.20 a pound must be mixed with 10 pounds of... (answered by mananth)
how many pounds of chocolate worth $1.20 a pound must be mixed with 10 pounds of... (answered by josmiceli)
2) How many pounds of chocolate worth $1.20 a pound must be mixed with 10 pounds of... (answered by jorel1380)
How many pounds of dog food worth $.80 per pound must be mixed with dog food worth $.65... (answered by josgarithmetic)