Difference between revisions of "2007 AMC 10B Problems/Problem 16"
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Revision as of 00:14, 24 January 2012
- The following problem is from both the 2007 AMC 10B #16 and 2007 AMC 12B #12, so both problems redirect to this page.
Problem
A teacher gave a test to a class in which of the students are juniors and
are seniors. The average score on the test was
The juniors all received the same score, and the average score of the seniors was
What score did each of the juniors receive on the test?
Solution
We can assume there are people in the class. Then there will be
junior and
seniors. The sum of everyone's scores is
Since the average score of the seniors was
the sum of all the senior's scores is
The only score that has not been added to that is the junior's score, which is
See Also
2007 AMC 12B (Problems • Answer Key • Resources) | |
Preceded by Problem 11 |
Followed by Problem 13 |
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 |
2007 AMC 10B (Problems • Answer Key • Resources) | ||
Preceded by Problem 15 |
Followed by Problem 17 | |
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 10 Problems and Solutions |