The average of 6 numbers is 10. If 5 of the numbers have an average of 8, find the sixth number.

Hi Xin,
Please find below the solution to the asked query :

We have,average of six numbers = 10sum of 6 numbers6 = 10sum of 6 numbers = 60Now,average of 5 numbers = 8sum of 5 numbers5 = 8sum of 5 numbers =40Now, sixth number = sum of 6 numbers - sum of 5 numbers = 60 - 40 = 20

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