Mathematics · Average
If the average of n quantities is P and the average of m quantities is Q, then the average of all (m + n) quantities together is:
- 1nP + mQm + n✓
- 2nP + mQP + Q
- 3mP + nQm + n
- 4nP + mQm - n
Correct answer
nP + mQm + n
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