Question

if average income of four friends is rs 825. if income of three friends is rs.800, rs 750 and rs.850 then income of fourth friend is​

Answer 1

In this case the average income= total income of 4 friends/4

Let the income of the fourth friend be x

So, 825=(800+750+850+x)/4

3300=2400+x

Thus, x=900rs

The fourth friend's income is Rs. 900.

Answer 2

hope it will help you

only take the income of fourth friend be x then put it on equation and find the value of x that's your answer