Question

a recipe for brownies calls for 2 cups of oil and 3 cups of sugar.how many cups of oil are used for 1 cup of sugar?

Answer 1

We can set up a proportion.

2/3 = x/1

Cross multiply.

2 * 1 = 2. 3 * x = 3x, so we have 3x = 2.

Now we can divide 3 by 2 to get our answer, which is 1.5. :)