Difference between revisions of "2007 AMC 12B Problems/Problem 4"

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==Problem==
 
==Problem==
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There are 15 girls in a class of 27 students. What is the ratio of boys to girls in this class?
  
At Frank's Fruit Market, 3 bananas cost as much as 2 apples, and 6 apples cost as much as 4 oranges. How many oranges cost as much as 18 bananas?
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(Enter a ratio <math>a:b</math> as a:b or a/b, where <math>a,b</math> are in lowest terms.)
 
 
<math>\mathrm {(A)} 6</math>  <math>\mathrm {(B)} 8</math>   <math>\mathrm {(C)} 9</math>  <math>\mathrm {(D)} 12</math>   <math>\mathrm {(E)} 18</math>
 
  
 
==Solution==
 
==Solution==

Revision as of 07:20, 29 May 2019

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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