Bethany cooked a total amount of 3 kg and 530 g of rice from Monday to Wednesday. She cooked 4 kg 570 g from Thursday to Saturday. On average, how much rice did she cook per day?
Monday to wednesday is three days, with 3.53 kg cooked.
Thursday to saturday is three days, with 4.57 kg cooked.
Total number of days is three + three = 6,
Total weight cooked is 3.53 + 4.57 = 8.1 kg
Average weight cooked is 8.1 / 6 = 1.35 kg/day