Question 585245
If end result is 32 gallons then if we say we need x gallons of 7% solution it would mean we would need 32-x gallons of 3% solution
percent1*volume1+percent2*volume2=finalpercent*totalvolume
7x+3(32-x)=6(32)

7x+96-3x=192

4x+96=192
4x=96
x=24
so we need 24 gallons of 7% solution and 32-24=8 gallons of 3% solution