The sum of five numbers is 655. The average of the first two numbers is 75 and the third number is 130. Find the average of the remaining two numbers?

Correct option is C

Given:

Sum of 5 numbers = 655

Average of first two numbers = 75

their sum = 75 × 2 = 150

Third number = 130

Formula Used:

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

Solution :

Sum of first 2 = 150

Sum of first 3 = 150 + 130 = 280

Sum of last 2 = 655 - 280 = 375

Average of last 2 = $$\frac{375}{2} = 187.5$$​