Question

Mrs Hamitlon tallies her studets text grades. What percent of the class got a A and B

Grade Tally
A 7
B 5
c 14
F 4

Answer 1

To calculate the percentage of the class that received an A or a B, follow these steps:

1. Calculate the total number of students:
- A: 7
- B: 5
- C: 14
- F: 4

Total = A + B + C + F = 7 + 5 + 14 + 4 = 30 students

2. Determine the total number of students that received an A or a B:
- A: 7
- B: 5

A + B = 7 + 5 = 12 students

3. Calculate the percentage of students who received an A or B:
\[
\text{Percentage} = \left( \frac{\text{Number of A's and B's}}{\text{Total number of students}} \right) \times 100
\]

Substituting the values:
\[
\text{Percentage} = \left( \frac{12}{30} \right) \times 100 = 40\%
\]

Therefore, 40% of the class got an A or a B.