Question

The average of five quantities is 10 and the average of three of them is 9. What is the average of the
remaining two items​

Answer 1

Answer:

The average of 5 quantities is 10 and the average of 3 of them is 9. What is the average of the remaining 2? Correct Answer is 11.5.

Explanation:

The average of 5 quantities is 10.

Therefore, the sum of all 5 quantities is 50.

The average of 3 of them is 9.

Therefore, the sum of the 3 quantities is 27.

Therefore, the sum of the remaining two quantities = 50 - 27 = 23.

Hence, the average of the 2 quantities = 23/2 = 11.5.