The average of 11 numbers is 10.9. If the average of first six is 10.5 and that of the last six is 11.4 the sixth number is_____________?

A. 11.0
B. 11.3
C. 11.4
D. 11.5

D. 11.5
Share the Post

Leave a Reply

Your email address will not be published. Required fields are marked *