Difference between revisions of "2012 AMC 12B Problems/Problem 1"

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                  == Problem ==
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Each third-grade classroom at Pearl Creek Elementary has 18 students and 2 pet rabbits. How many more students than rabbits are there in all 4 of the third-grade classrooms?
 
Each third-grade classroom at Pearl Creek Elementary has 18 students and 2 pet rabbits. How many more students than rabbits are there in all 4 of the third-grade classrooms?
  
 
(A) 48    (B) 56    (C) 64    (D) 72    (E) 80
 
(A) 48    (B) 56    (C) 64    (D) 72    (E) 80
  
                 Solution:
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                 == Solution ==
 
Multiplying 18 and 2 by 4 we get 72 and 8 students and rabbits respectively. Subtracting 72 from 8 we get  
 
Multiplying 18 and 2 by 4 we get 72 and 8 students and rabbits respectively. Subtracting 72 from 8 we get  
 
       64 which is choice '''C'''
 
       64 which is choice '''C'''

Revision as of 18:35, 23 February 2012

                 == Problem ==

Each third-grade classroom at Pearl Creek Elementary has 18 students and 2 pet rabbits. How many more students than rabbits are there in all 4 of the third-grade classrooms?

(A) 48 (B) 56 (C) 64 (D) 72 (E) 80

                == Solution ==

Multiplying 18 and 2 by 4 we get 72 and 8 students and rabbits respectively. Subtracting 72 from 8 we get

      64 which is choice C