Liters of milk sold in the morning = 40 liters
Liters of milk sold in the evening = 50 liters
Total liters of milk = 40 liters+ 50 liters= 90 liters
Cost of 1 liter of milk = Rs 24
Cost of total milk = Rs (90 × 24)= Rs 2160
The total sale of milk is Rs 2160.