A trader bought 21798 bags of maize in the first week. In the second week he bought 2476 bags less than what he had bought in the first week. In the third week he bought 542 bags more than he bought in the first week. How many bags of maize did he buy altogether?
In a farm, on average every 6 cows produce 108 litres of milk per week. In five weeks the cows produced 2160 litres of milk. How many cows are in the farm?
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