In order to find the ratio, we will firstly see the question that of what to what question is saying to find the ratio. So, in your question it is saying to find ratio of boys to girls, so first we will put the number of boys then number of girls in fraction form, then we will reduce it into the simplest form. And that simplest form is the exact ratio!

Answer:4:3

Step-by-step explanation:20:15

20/15

divided by 5

4 /3

therefore

4:3

[tex] \LARGE \sf \underline \red{Clarification}[/tex]

In order to find the ratio, we will firstly see the question that of what to what question is saying to find the ratio. So, in your question it is saying to find ratio of boys to girls, so first we will put the number of boys then number of girls in fraction form, then we will reduce it into the simplest form. And that simplest form is the exact ratio!

RequiredAnswer:–Number of boys [tex]\longrightarrow[/tex] 20

Number of girls [tex]\longrightarrow[/tex] 15

[tex] \LARGE \rm{ratio = \frac{20}{15}}[/tex]

[tex] \large{ \underline{ \boxed{ = \frac{3}{4}}}} \red{(ans)}[/tex]

∴ The ratio of boys to girls is 3:4.

Hence, option B is correct_____________________________________Additionalinformation____________________________