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1. The average of 7 numbers of 40. If 3 more numbers with an average of 21 are added to these numbers,what will be the average of the combined 10 numbers?
- A. 6.1
- B. 6.1
- C. 6.1
- D. 6.1
Answer: Option D
Explanation:
The average of 7 numbers of 40. If 3 more numbers, with an average of 21, are added to these numbers, what will be the average of the combined 10 number?
Total of 7 numbers = 7 x 40 = 280
Total of 3 numbers = 3 x 21 = 63
Total of (7 + 3 = 10) numbers = 280 + 63 = 343
So, average = 343 / 10 = 34.3
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