https://file.aiquickdraw.com/mathbot/file/1730237342166jyqw6bx1.jpg

Let's analyze the bar graph provided:

1. **Identifying Percentage for Grade B:**
   The graph shows that **40%** of students earned a grade of B. Given that the class contains 20 students:
   \[
   \text{Number of students with a B} = 0.4 \times 20 = 8
   \]
   **Answer:** 8 students earned a B.

2. **Finding Students Who Earned a C or Better (Grades A, B, and C):**
   - **A:** 20%
   - **B:** 40%
   - **C:** 15%
   
   Adding these percentages gives:
   \[
   20\% + 40\% + 15\% = 75\%
   \]
   Calculating 75% of 20 students:
   \[
   0.75 \times 20 = 15
   \]
   **Answer:** 15 students earned a C or better.

Would you like further details on the calculations or have any questions?

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Here are some related questions for further practice:

1. If the class size increased to 30 students, how many would have earned a B?
2. What percentage of students earned a grade of D?
3. How many students earned less than a C?
4. If 5 students improved their grades from C to B, how would that change the percentage for each grade?
5. What would be the number of students earning each grade if the class size doubled?

**Tip:** When working with percentages, always double-check that the total is consistent with the given data to avoid calculation errors.

What number of students earned a B on their paper? What number of students earned a C or better on their paper?

Learn how to calculate the number of students earning different grades based on percentages. This problem involves finding the number of students who received a B, as well as those who scored C or better, in a class of 20 students.

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