6. Find the ratio of milk with 3.8% fat to milk with 0.5% fat that have to be mixed in order to produce a blend with 3.5% fat.
Let 3.8% fat milk added be equal to x.
So, 0.5% fat milk added will be (1-x).
3.8x + 0.5(1-x) = 3.5
3.8x + 0.5 - 0.5x = 3.5
3.3x = 3
x = 3 / 3.3
= 0.909
1 - x = 0.091
Ratio = 0.909 : 0.091 = 90.9 : 9.1 (in %)
6. Find the ratio of milk with 3.8% fat to milk with 0.5% fat that have...