Rita used 3/4 cup of white sugar and 1/2 cup of brown sugar to make a cake. How
much sugar did she use in all?

We need to make the denominators equal for both fractions to figure out how much sugar was used in all.

3/4 + 1/2

We can multiply the numerator and the denominator by 1 for 3/4. We can multiply the numerator and the denominator by 2 for 1/2. Therefore, we will get 1.

3/4 + 1 = 1 3/4 OR  7/4

Answer is 7/4 or 1 3/4.

table 3 represents a direct variation function. : )