Question 1080825: How many liters of water must Sharon add to 5 liters of a soap and water mixture which is 36% soap to create a solution which is 12% soap? Answer by josgarithmetic(39617) (Show Source):
Also look at 36% compared to 12%.
Concentration cut to one-third. Increase only the volume by 3, but to not change the total quantity of soap. Fifteen total finished liters, so 15-5=10.