Assume there are four families in a country. The average per capita income of these families is Rs.5000. If the income of three families is Rs.4000, Rs.7000 and Rs.3000 respectively. What is the income of the fourth family?

Average capital income = Rs 5000


Income of 1st family = Rs 4000


Income of 2nd family = Rs 7000


Income of 3rd family = Rs 3000


Income of fourth family =


5000 =


20000 = 14000 + x


x = 6000

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