BECE Mathematics 2018 Paper

Concept:Percentage is a way to express a number as a fraction of 100. Use the formula: $$\text{Percentage} = \frac{\text{Part}}{\text{Whole}} \times 100$$Explanation:Step 1: Identify the number of boys. Number of boys $= 48$. Step 2: Find the total number of students in the class. Total students $= 12 + 48 = 60$. Step 3: Apply the percentage formula. $$\text{Percentage of boys} = \frac{\text{Number of boys}}{\text{Total students}} \times 100$$ $$\text{Percentage of boys} = \frac{48}{60} \times 100$$ Step 4: Simplify the fraction. $$\frac{48}{60} = \frac{4}{5}$$ So, $$\frac{4}{5} \times 100 = 80\%$$Answer:The percentage of boys in the class is $80\%$. Hence, the correct option is D. $80\%$.