Difference between revisions of "2011 AMC 10B Problems/Problem 2"
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Revision as of 12:11, 4 July 2013
Problem
Josanna's test scores to date are and . Her goal is to raise here test average at least points with her next test. What is the minimum test score she would need to accomplish this goal?
Solution
The average of her current scores is . To raise it points, she needs an average of , and so after her tests, a sum of . Her current sum is , so she needs a
See Also
2011 AMC 10B (Problems • Answer Key • Resources) | ||
Preceded by Problem 1 |
Followed by Problem 3 | |
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 |
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions.