SOLUTION: How many ounces of pure acid should be added to 35 oz of 40% acid to make 70% acid solution?

Question 936976: How many ounces of pure acid should be added to 35 oz of 40% acid to make 70% acid solution?
Found 2 solutions by josmiceli, lwsshak3:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = ounces of pure acid to be added
ounces of pure acid in 40%
solution
--------------

35 ounces of pure acid needs to be added
check:

OK
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
How many ounces of pure acid should be added to 35 oz of 40% acid to make 70% acid solution?
***
let x=amount of pure acid to add
40%*35+100%x=70%(35+x)
14+x=24.5+.70x
.30x=10.5
x=35
amount of pure acid to add=35 ounces
RELATED QUESTIONS
How many ml of 30% acid should be added to pure acid to make 70 ml of 35%... (answered by josgarithmetic)
How many ml of 30% acid should be added to pure acid to make 40 ml of 70%... (answered by josgarithmetic)
How many ml of 40% acid should be added to pure acid to make 40 ml of 45%... (answered by josgarithmetic)
How many ounces of 20% and 35% acid solution should be mixed to produce 15 oz of 30% acid (answered by ewatrrr)
how many ounces of pure water should be added to 20 ounces of 40% solution of muriatic... (answered by Alan3354)
how many ounces of pure water should be added to 20 ounces of a 40% solution of acid to... (answered by nyc_function)
How many ml of 20 percent acid should be added to pure acid to make 40 ml of 35 percent... (answered by ankor@dixie-net.com)
How many ounces of a 35% acid solution should be mixed with a 60% acid solution to get 40 (answered by mananth,ikleyn)
How many milliliters of pure acid should be added to 35 ml of 15% acid to make 40% acid... (answered by macston)