The average of five numbers is 7. When three new numbers are included, the average of the eight numbers becomes 8.5. The average of the three new numbers is

The average of five numbers is 7. When three new numbers are included,

1.	The average of five numbers is 7. When three new numbers are included, the average of the eight numbers becomes 8.5. The average of the three new numbers is
A.	9
B.	10.5
C.	11
D.	11.5
Answer» D. 11.5

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The average of five numbers is 7. When three new numbers are included, the average of the eight numbers becomes 8.5. The average of the three new numbers is

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