1. To find out how many bags of 50kgs are in 50 tonnes, we need to convert tonnes to kgs and then divide by 50.
Since there are 1000 kgs in one tonne, 50 tonnes is equal to 50,000 kgs.
Therefore, the number of bags of 50kgs in 50 tonnes is 50,000 kgs / 50kgs = 1000 bags.
2. To find out how many bags will be lost after drying 50 tonnes, we need to subtract the number of bags obtained after drying from the number of bags before drying.
From the given information, we know that 77 bags and 17.3 kgs were obtained after drying 4 tonnes. We need to convert the 4 tonnes to kgs to make it consistent.
Since there are 1000 kgs in one tonne, 4 tonnes is equal to 4,000 kgs.
Now, we can find out how many bags were obtained before drying by dividing 4,000 kgs by 50kgs = 80 bags.
Therefore, the number of bags lost after drying 50 tonnes is 80 bags - 77 bags = 3 bags.