SOLUTION: A chemist needs to mix a solution that is 15% herbicide with a solution that is 30% herbicide to make 20 liters of a solution that is 19.5% herbicide. How much of each solution sho
Algebra.Com
Question 748971: A chemist needs to mix a solution that is 15% herbicide with a solution that is 30% herbicide to make 20 liters of a solution that is 19.5% herbicide. How much of each solution should she use?
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
.30X+.15(20-X)=.195*20
.30X+3-.15X=3.9
.15X=3.9-3
.15X=.9
X=.9/.15
X=6 LITERS OF 30% MIX IS USED.
PROOF:
.30*6+.15(20-6)=.15*20
1.8+.15*14=3.9
1.8+2.1=3.9
3.9=3.9
RELATED QUESTIONS
a plant manager needs a solution of 77% herbicide to be mixed with a solution of 67%... (answered by mangopeeler07)
Bob has to mix a solution of .67 herbicide and .46 herbicide to form 42 liters of a .55... (answered by stanbon,mananth,rvquartz)
Mrs. Huang operates a soybean fam. She buys many supplies in bulk. Often the bulk... (answered by ptaylor)
A chemist needs to mix a 20% acid soultion with 9 liters of a 47% acid solution to obtain (answered by richwmiller)
A chemist needs to mix 20 liters of 40% salt solution with some 70% solution to get a... (answered by josmiceli)
A chemist needs to mix a solution containing 30% insecticede with a solution containing... (answered by ptaylor)
Three kilograms of grass seed A contains 5% herbicide. A different type of grass seed,... (answered by fractalier)
How much water should be added to 4 gallons of a 5% herbicide solution to dilute it to a... (answered by ewatrrr)
A chemist needs 6 liters of a 10%
alcohol solution but has only a
15%... (answered by josmiceli)