The sum of five numbers is 655. The average of the first two numbers is 78 and the third number is 125. Find the average of the remaining two numbers?

Correct option is C

Given:

Sum of 5 numbers = 655

Average of first two numbers = 78

Third number = 125

Need: Average of last two numbers

Formula Used:

Average =$$\frac{\text{Sum of terms}}{\text{Number of terms}}$$​

Solution:

Average of first two numbers = 78

their sum = 78 × 2 = 156

Sum of first 3 numbers = 156 + 125 = 281

Sum of remaining 2 numbers = 655 - 281 = 374

Average of remaining 2 numbers = $$\frac{374}{2} = 187$$​​