https://file.aiquickdraw.com/mathbot/file/1730560945646gsrpqv3y.jpg

The question in the image reads:

> "In a class of 30 students, 80% of students failed in the examination. How many students passed in this examination?"

Let's solve it.

### Solution:

1. **Total number of students** = 30
2. **Percentage of students who failed** = 80%

Since 80% of the students failed, the remaining 20% of students passed.

3. **Percentage of students who passed** = 100% - 80% = 20%

4. **Number of students who passed** = \( \text{Total students} \times \frac{\text{Percentage of students who passed}}{100} \)
   \[
   = 30 \times \frac{20}{100}
   = 30 \times 0.2
   = 6
   \]

### Answer:
**6 students passed in the examination.**

Would you like more details on this calculation or have any questions?

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Here are five related questions to further explore this topic:

1. If 70% of a class of 40 students passed, how many students failed?
2. In a school with 100 students, if 25% failed, how many students passed?
3. If 50 students took an exam and 40% passed, how many failed?
4. In a class of 20 students, if 15 students passed, what percentage of students failed?
5. If 90% of a class of 60 students failed, how many students passed?

**Tip:** Remember, to find a part of a group based on a percentage, multiply the total by the percentage (in decimal form).

In a class of 30 students, 80% of students failed in the examination. How many students passed in this examination?

Learn how to calculate the number of students who passed an exam in a class of 30 students, where 80% of students failed. This problem involves percentage calculations and basic arithmetic, suitable for students in Grades 4-6.

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