- A43
- B37
- C40
- D41
Step-by-Step Solution
Original total = . The changes add and subtract , so the total is still 600 and the mean stays 600 ÷ 15 = 40.
Answer: C) 40
The mean of 15 numbers is 40. Each of the first 5 numbers is increased by 6 and each of the remaining 10 numbers is decreased by 3. What is the new mean?
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