Answer :

Answer:

Step-by-step explanation:

1. **Find the number of boys:**

  - You need to calculate \(\frac{3}{5}\) of 90.

  \[

  \text{Number of boys} = \frac{3}{5} \times 90

  \]

  \[

  \text{Number of boys} = \frac{3 \times 90}{5}

  \]

  \[

  \text{Number of boys} = \frac{270}{5}

  \]

  \[

  \text{Number of boys} = 54

  \]

### 2. Calculate the Number of Girls

2. **Find the number of girls:**

  - Subtract the number of boys from the total number of children.

  \[

  \text{Number of girls} = 90 - \text{Number of boys}

  \]

  \[

  \text{Number of girls} = 90 - 54

  \]

  \[

  \text{Number of girls} = 36

  \]

### Summary

- **Number of boys**: 54

- **Number of girls**: 36