Question

A Recipe uses 3 cups of flour to 1 1/4 cups of milk. IF you have 2 cups of flour, how much milk should you use?

Answer 1

x/2 = (1 1/4)/3

x = (2 1/2)/3 = 5/2 * 1/3 = 5/6
or, 2/3 as much flour, so 2/3 as much milk.