Question

In a class, 60% of students are boys, and 40% are girls. If 30% of boys and 20% of girls passed an exam, what percentage of the class passed?

• A. 26%
• B. 28%
• C. 30%
• D. 32%

Hint:

Assume a total (e.g., 100) for percentage problems to simplify calculations.

Answer 1

The Correct Option is A

We need the percentage of the class that passe(d)
- Step 1: Assume 100 students. Boys = 60, girls = 40.
- Step 2: Boys passed: \( 0.3 \times 60 = 18 \). Girls passed: \( 0.2 \times 40 = 8 \).
- Step 3: Total passed: \( 18 + 8 = 26 \).
- Step 4: Percentage: \( \frac{26}{100} \times 100 = 26% \).
- Step 5: Options:
- (a) 26: Correct.
Thus, the answer is a.