The average of 11 numbers is 10.9. If the average of first six is 10.5 and that of the last six 11.4, then find the sixth number.

The average of 11 numbers is 10.9. If the average of first six is 10.5 and that of the last six 11.4, then find the sixth number.

A. 11.0

B. 11.3

C. 11.5

D. 114

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