Ratio
Algebra
Level
2
The ratio of girls to boys in a class is 4 to 5. If there are a total of 27 students in a class, how many boys are there in the class?
The answer is 15.
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1 solution
The ratio is 4 to 5, so the whole must be 9. The fraction of boys is 5/9.
number of boys = (5/9)(27) = 15