2007 AMC 12B Problem 12
Below is the professionally curated solution for Problem 12 of the 2007 AMC 12B, from LIVE by Po-Shen Loh. You can also try the full timed exam, view all 2007 AMC 12B solutions, or check the answer key.
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Difficulty rating: 1330
12.
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:
Take a class of students, so there is junior and seniors.
The total of all scores is and the seniors contribute So the junior scored
Thus, the correct answer is C.
Problem 12 in Other Years
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