If the average of 10 numbers is 40 and the average of six of them is 28, what…
2023
If the average of 10 numbers is 40 and the average of six of them is 28, what will be the average of the remaining four numbers?
Answer: D. 58 — First, calculate the total sum of all 10 numbers by multiplying their average (40) by the count, resulting in 400. Next, find the sum of the six known numbers…
- A.
52
- B.
54
- C.
56
- D.
58
Attempted by 138 students.
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Correct answer: D
First, calculate the total sum of all 10 numbers by multiplying their average (40) by the count, resulting in 400.
Next, find the sum of the six known numbers by multiplying their average (28) by 6, which equals 168.
Subtracting this partial sum from the total gives 232 for the remaining four numbers, and dividing by 4 yields an average of 58.
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