Quantitative Aptitude Average

The average age of the students in a school is 13.2 years. The average age of the boys is 14.4 years and that of the girls is 12.3 years. The ratio of the number of girls to that of boys is:

1

3 ∶ 4

2

4 ∶ 1

3

4 ∶ 3

4

1 ∶ 4

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