2007 AMC 12B Problems/Problem 4

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Problem

There are 15 girls in a class of 27 students. What is the ratio of boys to girls in this class?

(Enter a ratio $a:b$ as a:b or a/b, where $a,b$ are in lowest terms.)

Solution

18 bananas cost the same as 12 apples, and 12 apples cost the same as 8 oranges, so 18 bananas cost the same as $8 \Rightarrow \mathrm {(B)}$ oranges.

See Also

2007 AMC 12B (ProblemsAnswer KeyResources)
Preceded by
Problem 3
Followed by
Problem 5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
All AMC 12 Problems and Solutions

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