The average of 5 quantities is 9. The average of 3 of them is 4. What is the average of remaining 2 numbers? Select: A) 16.5 B) 10 C) 8 D) 9.5 E) None of these
16.5NSWER: 16.5   (5x9-3x4)/2=16.5
<result>A</result>
The average of 5 quantities is 9. The average of 3 of them is 4. What is the average of remaining 2 numbers?