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If there are 12 girls and 15 boys in a class which ratios are true

- 12 girls to 27 students

- 5 boys to 9 students

- 25 boys to 12 girls

- 3 girls to 5 boys

-12 girls to 27 students

2 ratios are true.

See below in bold.

Step-by-step explanation:

Number of students = 12 girls + 15 boys = 27.

So 12 girls to 27 students is true.

Also if we divide the number of boys and the number of students by 3 we get:

15/3 to 27/3

= 5 boys to 9 students - true.