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Find the average of 9, 18, 27.
The average of 8 numbers is 15. A new number 24 is added. Find the new average.
Find the average of 7, 14, 21, 28, 35.
The average of 10 numbers is 25. A new number 47 is added. Find the new average.
Find the average of 100, 150, 200, 250.
The average of 6 numbers is 18. A new number 32 is added. Find the new average.
Find the average of 50, 60, 70.
The average of 7 numbers is 30. A new number 54 is added. Find the new average.
Find the average of 8, 16, 24, 32, 40.
Average weight of 20 boys is 55 kg and of 15 girls is 50 kg. Find the average weight of all students.