Averages · Question 17 · Easy
The average of 6 numbers is 24. When a seventh number is added, the average becomes 25. What is the seventh number?
- 25
- 30
- 31
- 49
Answer and explanation
Answer: C. 31
Explanation: Sum of 6 numbers = 144. Sum of 7 numbers = 175. Seventh number = 175 − 144 = 31.
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