I got a 100 on a test with 11 problems. But, my sister only got 10 questions right. What percentage did she get?

Answer 1

To find the percentage your sister got on her test, you can use the following formula:

\[ \text{Percentage} = \left( \frac{\text{Number of correct answers}}{\text{Total number of questions}} \right) \times 100 \]

In this case, your sister got 10 questions right out of 11 total:

\[ \text{Percentage} = \left( \frac{10}{11} \right) \times 100 \]

Calculating that:

\[ \text{Percentage} = \left( 0.9091 \right) \times 100 \approx 90.91 \]

So, your sister got approximately 90.91%.