I need Help with math!?

So, if I'm not mistaken, you just need a scenario where you would need to find the answer to this... well, how about this.

Ken is making his favorite pastry for a party for four. The recipe asks for 1 2/3 cups sugar, and should be just enough to serve all four people. However, one member of your party is a diabetic, and says he will go into a coma if he eats more than 3 ounces of sugar at a time. Should he partake of your delicious sweet pastry delight (8oz = 1 cup)?

(1 2/3)(1/4)
= [(3 x 1 + 2)/3][1/4]
= [5/3][1/4]
= (5 x 1)/(3 x 4)
= 5/12

5/3 x 1/4 =5/12

You can make it about money or about a recipe.