The average monthly expenditure of a family for the first four months is ₹13,750, for the next three months is ₹11,750 and for the last five months is ₹31,750. If the family saves ₹15,550 during the whole year, find the average monthly income of the family during the year. (Consider integral part only)

₹22,045

Sum of expenditure = 4 ×13750 + 3 ×11750 + 5 ×31750 =  55000 + 35250 + 158750 = 249000

Total income = 249000 + 15550 = 264550

= 22045   (approx)