Assume there are four families in a locality. If the income of each family is ₹6,000,₹4,000, ₹7,000 and ₹3,000 then find out the average income of the locality from the following options:
(a) ₹5,000
(c) ₹2,000
(b) ₹3,000
(d) ₹6,000