Question

The ratio of girls to boys in Liza's classroom is 5 to 4.

How many girls are in her classroom if there is a total of 27 students?

Answer 1

Hi!

The answer is: 15 girls.

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Let

x-----> the number of girls

y-----> the number of boys

we know that

- x+y=27, Which is equation A.

- x/y = 5/4

- isolate the variable y

- y=4/5x, Which is equation B.

- 9/5x=27

- x=5x27/9

- 15 Girls.

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Hope this helps!