The sum of five numbers is 655. The average of the first two numbers is 77 and the third number is 123. Find the average of the remaining two numbers?

Correct option is A

Given:

Total sum of five numbers = 655

Average of first two numbers = 77 

Third number = 123

Formula Used:

Sum of remaining two numbers = Total sum – (sum of first three numbers)

Average = $$\frac{\text{Sum}}{2}$$​​

Solution:

Sum of the first two numbers = 77 × 2 = 154

Sum of remaining 2 numbers = 655 − (154 + 123)

= 655 − 277 = 378

Average = $$\frac{378}{2}$$​ = 189