Assume there are four families in a country. The average per capita income of these families is Rs. 5000. If the incomes of three families is Rs. 4000, Rs. 7000 and Rs. 3000 respectively, what is the income of the fourth family?
Rs. 7500
Rs. 3000
Rs. 2000
Rs. 6000
D.
Rs. 6000
Total income of four families = 5000 x 4 = 20000
Total income of three families = 4000 + 7000 + 3000 = 14000
Income of the fourth family = 20000-14000 = 6000
