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BECE Mathematics 2018 Paper

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Question : 38

Total: 40

In a class, there are 12 girls and 48 boys. Find the percentage of boys in the class.

$20\%$
$40\%$
$60\%$
$80\%$

Solution:

\text{ Percentage } = \frac{\text{ Number }}{\text{ Total }} \times 100

Number of boys

=48

Total number of students

=12+48=60

Percentage of boys

= \frac{\text{ Number of boys }}{\text{ Total number of students }} \times 100

Percentage of boys

= \frac{48}{60} \times 100 = 80\%

Cancellations

1. The zeros in 60 and 100 cancels each other

2. 2 divides 6, 3 times and 10,5 times

3. 3 divides itself and 48,16 times

4.

16 \times 5=80

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