2005 AMC 12A Problems/Problem 5
Problem
The average (mean) of 20 number is 30, and the average of 30 other numbers is 20. What is the average of all 50 numbers?
Solution
See also
2005 AMC 12A (Problems • Answer Key • Resources) | |
Preceded by Problem 4 |
Followed by Problem 6 |
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All AMC 12 Problems and Solutions |