Problema Solution
How much pure acid must be mixed with 12 liters of 30% acid to make a 40% solution?
Answer provided by our tutors
Find: Liters of pure acid to make a 40% solution (100% acid is pure acid)
12(0.3) + 1.0x = 0.40(x+12)
find x
x = 2
Final answer: 2 liters of pure acid must be mixed with 12 liters of 30%