SOLUTION: how many gallons of hydrochloric acid must be added to 12 gallons of a 30% solution to obtain a 40% solution?
Algebra.Com
Question 275647: how many gallons of hydrochloric acid must be added to 12 gallons of a 30% solution to obtain a 40% solution?
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
.30*12+x=.40(12+x)
3.6+x=4.8+.40x
x-.40x=4.8-3.6
.6x=1.2
x=1.2/.6
x=2 gallons of acid needs to be added.
Proof:
.30*12+2=.4(12+2)
3.6+2=.4*14
5.6=5.6
RELATED QUESTIONS
how many gallons of hydrochloric acid must be added to 12 gallons of a 30% solution to... (answered by Maths68)
How many gallons of hydrochloric acid must be added to 12 gallons of a 30% solution to... (answered by chana)
How many gallons of hydrochloric acid must be added to 12 gallons of a 30% solution to... (answered by josgarithmetic)
How many gallons of hydrochloride acid must be added to 12 gallons of a 30% solution to... (answered by josgarithmetic)
How many gallons of a solution of 20% acid must be blended with a solution of 5% acid to... (answered by ewatrrr)
How many gallons of a 60% solution of nitric acid should be added to 10 gallons of a 30%... (answered by josgarithmetic)
how many gallons of pure (100%) acid should be added to 5 gallons of a 40% acid solution... (answered by scott8148,Earlsdon)
How many gallons of a solution of 20% acid must be blended with a solution of 5% acid to... (answered by mananth,jorel1380)
How many gallons of a 50% acid solution must be mixed with 40 gallons of a 19% solution... (answered by mananth)