The average monthly expenditure of a family was ₹10,000 during the first three months, ₹12,500 during the next four months, and ₹13,500 during the last five months of a year. If the total savings during the year were ₹32,500, then the average monthly income (in ₹) of the family was:
1
17,250
2
13,750
3
15,000
4
14,250