Question

Assume that there are four families in a country the average per capita income of these families is 10000 if the income of the income of three families is 8000 ,14000,6000 respectively , find out the income of the fourth familiy?

Answer 1

The answer is 12,000
14000+6000+8000+12000=40000
40000/4=10000
So the answer is 12000