Question

In a class of 45 pupils the ratio of boys to girls is three ratio 2 calculate the number of boys and girls in the class

Answer 1

To find the number of boys and girls in the class based on the given ratio of boys to girls (3:2), we can follow these steps:

1. **Calculate the total parts in the ratio**:
The ratio 3:2 means there are 3 parts boys and 2 parts girls.
So, the total parts = 3 + 2 = 5 parts.

2. **Determine the value of each part**:
The total number of pupils in the class is 45.
To find the value of each part, we divide the total number of pupils by the total parts:
\[
\text{Value of each part} = \frac{45}{5} = 9
\]

3. **Calculate the number of boys and girls**:
- Number of boys:
\[
\text{Number of boys} = 3 \times \text{value of each part} = 3 \times 9 = 27
\]
- Number of girls:
\[
\text{Number of girls} = 2 \times \text{value of each part} = 2 \times 9 = 18
\]

Thus, in the class, there are **27 boys** and **18 girls**.