search
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 -
answer image

Explanations:

explanation image