The mean of 6 numbers is 10. Another number is added and the mean is now 11. What number was added?

Sujay Phadke asked Oct 25, 2023

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18 votes

The mean of 6 numbers is 10.

Another number is added and the mean is now 11.
What number was added?

Sujay Phadke asked Oct 25, 2023

3.1k points

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8 votes

Answer:

Explanation:

(10 + 10 + 10 + 10 + 10 + 10 + x)/(7) = 11

60 + x = 77

x = 77-60

x = 17

Jwueller answered Oct 31, 2023

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