Question 1078560
x=amount of water in liters
6(.30)+x(0)=(6+x)(.12), pure acid amount
1.8=0.72+.12x
.12x=1.08
x=9 liters
The total solution will be 15 liters
going from 6 to 15 is an increase of 2.5
the reciprocal is 0.4, and that times 30%=12% check.