SOLUTION: The mean of 5 numbers is 11. When a sixth number is 12. Find the sixth number.
Algebra.Com
Question 890158: The mean of 5 numbers is 11. When a sixth number is 12. Find the sixth number.
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
by the given
==> after cross-multiplication
==>
==> after dividing both sides by 6
==> after cross-multiplication.
Hence
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