Averages · Question 21 · Medium
The average of 10 numbers is 45. If each number is multiplied by 3 and then 4 is subtracted from each result, what is the new average?
- 135
- 139
- 41
- 131
Answer and explanation
Answer: D. 131
Explanation: Multiplying every number by 3 makes the average 135; subtracting 4 from each lowers it to 131.
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