Respuesta :

rahatmath220

Answer:

10 boys

Step-by-step explanation:

Ratio of girls to boys was  3:2

That means, If there are 3  girls,

then there will be 2 boys.

Now, when there are 15 girls,

that is girls number is multiplied by 5 , since 3x5=15

Then boys number will also be multiplied  by 5.

So,

Total number of boys will be=2x5=10

[tex]\bf \cfrac{girls}{boys}\qquad 3:2\qquad \cfrac{3}{2}~\hspace{3.2em}\cfrac{15}{b}=\cfrac{3}{2}\implies 30=3b\implies \cfrac{30}{3}=b\implies 10=b[/tex]