The ratio of boys to girls at a school is 9 to 11. If 400 students attend the school, how many are girls?

50
140
220
215

7 answers

9+11=? 9/?=?/400

9/20 +11 /20 = 20 /20 total fraction boys and girls
so
girls are (11/20)400 = 220

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Assignment (1)
If the number of a school students is (220) students, and the ratio of boys to girls is 9:11. What is the number of boys and the number of girls in the school?

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