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# In a classroom then are 45 students in which 30 are boys are rest are female, find the ratio of number of girls to the number of boys.

- 4:16
- 1:1
- 1:4
- 1:2

## The correct answer is: 1:2

### Total number of students =45

Number of boys =30

∴ Number of girls =45-30⇒15.

∴ Ratio of number of girls to number of boys

i. e, Ratio is 1 : 2

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