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What is the ratio of the students who secured a C grade to the students who secured an A grade?


To solve this problem, we need to determine the ratio of students who secured a C grade to those who secured an A grade based on the pie chart provided.

From the pie chart:
- **C grade (yellow section)** = 22.5% of the students
- **A grade (blue section)** = 25.0% of the students

The total number of students is 80.

Let's first calculate the number of students for each grade:

- **Number of students with C grade** = \( 22.5\% \times 80 = \frac{22.5}{100} \times 80 = 18 \) students.
- **Number of students with A grade** = \( 25\% \times 80 = \frac{25}{100} \times 80 = 20 \) students.

Now, the ratio of students who secured a C grade to those who secured an A grade is:

\[
\text{Ratio of C to A} = \frac{18}{20} = \frac{9}{10}
\]

So, the ratio is **9:10**.

Would you like further details or have any questions?

Here are 5 additional related questions:
1. How many students secured a B grade?
2. What is the total percentage of students who secured a grade other than A?
3. What percentage of students secured a D grade?
4. What is the ratio of students who secured B to those who secured D?
5. If 5 more students joined the class, what would be the new percentage of C grade students?

**Tip**: Ratios can often be simplified by finding the greatest common divisor (GCD) of the numerator and denominator.

What is the ratio of the students who secured a C grade to the students who secured an A grade?

Learn how to calculate the ratio of C grade students to A grade students in a Statistics class. This problem covers the use of percentages and ratios, suitable for Grades 6-8. Understand the core concept of finding ratios based on student performance.

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