Question 277859
How many gallons of pure water must be added to a 12% salt solution in order to obtain an 8% salt solvent? 
:
You need to know how much 12% salt solution, assume it is 10 gal
:
Let x = amt of water to accomplish this
:
.12(10) = .08(x+10)
1.2 = .08x + .8
1.2 - .8 = .08x
.4 = .08x
x = {{{.4/.08}}}
x = 5 gallons of water required