A 30% solution of fertilizer is to be mixed with 60% solution of fertilizer to get 150 gallons of 50% solution. How many gallons of each solution is needed?
Ratio of 30% to 60% solution = 60-50 : 50-30 = 1:2 Volume of 30% solution =150*(1/(1+2)=50 gal. Volume of 60% solution =150*(2/(1+2)=100 gal Check: 50+100=150 gal. ok concentration: (50*.3+100*.6)/150=75/150=50% ok
