Question

Assume there are four families in a country the average per capita income of these families is rupees 5,000 if the income of the family is rupees 4000 and 7000 and 3000 respectively what is the income IV family

Answer 1

total=20000
four family=4000+7000+3000+x=20000
14000+x=20000
x=20000-14000
x=6000