SOLUTION
To get the fraction of Susie used, we simply change the decimal 0.75 into fraction.
This becomes
After moving the decimal point and changing to fraction, divide through by a common factor. And the common factor is 5.
Therefore, the answer is
![(3)/(4)](https://img.qammunity.org/2023/formulas/mathematics/college/6otmyw3mgeh8fs2t7959rb31invfxzzkm4.png)