Respuesta :

Answer:

12

Step-by-step explanation:

Since 15 is 3 times the ratio you multiply 4 by 3

Answer:

There are 12 boys in Ms. Stell's World History Class.

Step-by-step explanation:

The ratio we are given is 5:4.

*5 is the simplified version of 15

*4 is the simplified version of x (total number of boys)

The first thing we need to do is find the number that gives us the total number of girls (15)

5*3 = 15.

Now we do that for the 4.

[tex]\frac{5*3}{4*3}[/tex] = [tex]\frac{15}{12}[/tex]

The answer should be 15:12

Best of Luck!

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