Kira worked ⁵⁄₁₂ of the problem on her math test in the first hour. After the second hour, she had worked ⁹⁄₁₂ of the problems. What fraction of the problems did she work in the second hour?

To find out the fraction of the problems Kira worked on during the second hour, we need to subtract the fraction of problems she worked on in the first hour from the fraction of problems she had completed by the end of the second hour.

### Step 1: Identify the fractions
- Fraction of problems Kira worked on in the first hour: \( \frac{5}{12} \)
- Fraction of problems Kira had completed by the end of the second hour: \( \frac{9}{12} \)

### Step 2: Subtract the first-hour fraction from the second-hour fraction
To find the fraction of problems she worked on during the second hour:
\[
\text{Fraction of problems worked on in the second hour} = \frac{9}{12} - \frac{5}{12}
\]
\[
\frac{9}{12} - \frac{5}{12} = \frac{9 - 5}{12} = \frac{4}{12}
\]

### Step 3: Simplify the fraction
\[
\frac{4}{12} = \frac{1}{3}
\]

### Final Answer
Kira worked on \( \frac{1}{3} \) of the problems during the second hour.

**Would you like further details or have any questions?**

Here are some related questions:
1. If Kira worked on \( \frac{1}{3} \) more problems in the third hour, how many problems would she complete?
2. How many problems did Kira work on if the total number of problems was 36?
3. What fraction of the test did Kira have left to complete after the second hour?
4. If Kira continued at the same rate, how long would it take her to finish all the problems?
5. What percentage of the problems did Kira work on during the first hour?

**Tip**: Always simplify fractions when possible for easier interpretation and understanding.

Discover how Kira worked on fractions of problems during her math test. Solve the problem step-by-step to find out what fraction of the problems she worked on in the second hour. Suitable for Grades 5-6.

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