The average of 17 numbers is 10,9. If the average of the first 9 numbe – McqOptions

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1.	The average of 17 numbers is 10,9. If the average of the first 9 numbers is 11,4, then the middle number is
A.	10.9
B.	12.7
C.	12.9
D.	11.8
Answer» E.

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