In a particular week, the average earning per day of a plumber from Monday to Wednesday remained ₹580 and that from Thursday to Saturday it was ₹612. If the average earning for the whole week was ₹675, then how much did he earn on Sunday?

₹1149

average earning per day of a plumber from Monday to Wednesday i.e. 3 days = 580

Sum of earnings from Monday to Wednesday = 580*3

average earning per day of a plumber from Thursday to Saturday i.e. 3 days = 612

Sum of earnings from Monday to Wednesday = 612*3

Average of week = 675

(sum of Monday to saturday + earning on sunday)/7 = 675

(580*3 + 612*3) + earning on sunday = 675*7

earning on sunday = 4725 - 1740 - 1836 = 1149

The correct answer is Option (4) → ₹1149