If the average of six numbers is 10 and each number is multiplied by 3, what is the new average?
- 10
- 13
- 30
- 60
Explanation
We are given:
Average of 6 numbers = 10
So, total sum = 10 × 6 = 60
If each number is multiplied by 3, then the new total becomes:
New total = 60 × 3 = 180
Number of values = still 6
New average = 180 ÷ 6 = 30
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- 8
- 8.5
- 9
- None of these
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