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2005 AMC 10A Question 6

AMC10 · 2005 AMC 10A

Question 6

The average (mean) of $20$ numbers is $30,$ and the average of $30$ other numbers is $20.$ What is the average of all $50$ numbers?
  1. $23$
  2. $24$
  3. $25$
  4. $26$
  5. $27$