Four-ninths of a drink mix is dye and the rest is sugar. When the mix is added to water a gallon of drink is made that is 7.5% sugar. What percentage of the gallon is dye?
Here, let's say that the gallon is 100 litres.
Then sugar in the gallon will be 7.5 litres
'x' is the amoung of the mix poured into gallon
x = (9)(1.5)
Now dye will be 9(1.5)*(4/9)=1.5*4=6
Even if you don't find the way to solve it you can straight eliminate answers C,D,E cause the amount of dye is always going to be less given the
Hope it helps