Bongie,Khanyisa and Mfanelo are participating in a baking challenge to create the most delicious cupcakes. Each baker is responsible for a different part of the recipe Bongie decides to make the cupcakes batter. She uses 3/4 cup of sugar, 1/2 cup of flour, and 1/3 cup of butter. How much flour did Bongie use compared to the total amount of sugar and butter combined?

Step 1: Identify the amount of flour used. Bongie used $\frac{1}{2}$ cup of flour.

Step 2: Calculate the total amount of sugar and butter combined. Amount of sugar = $\frac{3}{4}$ cup Amount of butter = $\frac{1}{3}$ cup Total amount of sugar and butter = $\frac{3}{4} + \frac{1}{3}$

To add these fractions, find a common denominator, which is 12. $\frac{3}{4} = \frac{3 \times 3}{4 \times 3} = \frac{9}{12}$ $\frac{1}{3} = \frac{1 \times 4}{3 \times 4} = \frac{4}{12}$ Now, add the fractions: $\frac{9}{12} + \frac{4}{12} = \frac{9+4}{12} = \frac{13}{12} cups$

Step 3: Compare the amount of flour to the total amount of sugar and butter combined. This comparison is expressed as a ratio: $\frac{Amount of flour}{Total amount of sugar and butter}$. $\frac{\frac{1}{2}}{\frac{13}{12}}$ To simplify this complex fraction, multiply the numerator by the reciprocal of the denominator: $\frac{1}{2} \times \frac{12}{13} = \frac{1 \times 12}{2 \times 13} = \frac{12}{26}$ Simplify the fraction by dividing both the numerator and the denominator by their greatest common divisor, which is 2: $\frac{12 \div 2}{26 \div 2} = \frac{6}{13}$

Bongie used $\frac{6}{13}$ as much flour compared to the total amount of sugar and butter combined.

The final answer is $\boxed{\frac{6}{13}}$.