Question

The average of eight numbers is 90.Out of eight numbers,the average of five numbers is 55.Find the sum of remaining numbers.​

Answer 1

There are total eight numbers.

Avg of 8 no. = 90

and Avg of 5 no. = 55 out of 8 no.

8 - 5 = 3 no. •°• Avg of 8 - Avg of 5

= 90 - 55

= 35 Avg of 3 no.

Now,

Avg of 3 no. = 35 = (x1 + x2 + x3)/3

3 × 35 = x1 + x2 + x3

105 = x1 + x2 + x3

Therefore, The sum of remaining numbers is 105.