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

Question

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.