The average of 6 numbers is 8. What should the value of the
7th number be to obtain an average of 10?
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Answer:
The value of the 7th number should be 22.
Step-by-step explanation:
The average of 6 numbers is 8.
Therefore, the sum of those 6 numbers is 6 times 8 = 48.
In order to obtain an average of 10 from 7 numbers, the sum need to be 7 times 10 = 70.
Therefore, the value of the 7th number should be (70 - 48) = 22.
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