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

5:4....added = 9

5/9(27) = 135/9 = 15 girls <==
4/9(27) = 108/9 = 12 boys

Answer 2

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? 

5x + 4x = 27 
x = 3 

There are 15 girls and 12 boys.

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