Q.
The average of 5 positive integers is 528. The average of the first two numbers is 408 and the average of last two numbers is 554. What is the third number?
[A]
750
[B]
845
[C]
954
[D]
1047
Answer & Explanation
Option: [C]
Let the third number be x,
According to the question,
(408 * 2 + x + 554 * 2)/5 = 528
408 * 2 + x + 554 * 2 = 2640
x = 954