Answer
![(5)/(9)](https://img.qammunity.org/2023/formulas/mathematics/college/k272urtp84x94aysc1l2tccj7c7c0v88p3.png)
Step-by-step explanation
Given
• 45 boys
,
• 81 girls
Procedure
We have to find the ratio of boys to girls, which can be written as 45:81 or:
![(45)/(81)](https://img.qammunity.org/2023/formulas/mathematics/college/lx33dytirf8qsxp0aaecapk8bhk6c2qjmw.png)
However, we have to simplify. Both numbers are multiple of 9, thus:
![=((45)/(9))/((81)/(9))=(5)/(9)](https://img.qammunity.org/2023/formulas/mathematics/college/livb47oct7v0yt2mjp6bo70hesmf26v5dt.png)
Then every five boys there are 9 girls.