How many girls are in the class?
Algebra
Level
1
The ratio of girls to boys in class is 9 to 7 and there are 80 students in the class. How many girls are in the class?
35
40
50
45
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Answer
= [ 9 / (9 + 7) ] × 80
= [ 9 / 16 ] × 80
= 45 girls