Q: The average of twelve numbers is 45.5. The average of the first four numbers is 41.5 and that of the next five numbers is 48. The 10th number is 4 more than the 11th number and 9 more than the 12th number. What is the average of the 10th and 12th numbers?
A.
47.8
B.
46.5
C.
47
D.
46
Correct Answer:
Option B -
Explanations:
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