Before it can be used, an 18 ounce container of liquid fertilizer must be mixed with 36 ounces of water. What fraction of fertilizer is in the final mixture?

Answer 1

18F + 36(0) = (`18+36)M = 54M

F = 54M/18 = 3M

M = F/3. One third of the final mixture is fertilizer

18/(18+36)= 18/54 = 1/3