john has 12kg of brown sugar which cost 1100 frw per kilogram and 8kg of white sugar which cost 1200 fw per kilogram. What will be the average price of the mixture? Show your working out?

To find the average price of the mixture, we need to calculate the total cost of the brown sugar and the total cost of the white sugar, and then divide by the total weight of the mixture.

Total cost of brown sugar = 12kg * 1100 frw/kg = 13200 frw
Total cost of white sugar = 8kg * 1200 frw/kg = 9600 frw

Total weight of the mixture = 12kg + 8kg = 20kg

Total cost of the mixture = 13200 frw + 9600 frw = 22800 frw

Average price of the mixture = Total cost of the mixture / Total weight of the mixture
Average price of the mixture = 22800 frw / 20kg = 1140 frw/kg

Therefore, the average price of the mixture is 1140 frw per kilogram.

Total cost of brown sugar: 12 kg x 1100 frw/kg = 13,200 frw
Total cost of white sugar: 8 kg x 1200 frw/kg = 9,600 frw

Total cost of the mixture: 13,200 frw + 9,600 frw = 22,800 frw

Total weight of the mixture: 12 kg + 8 kg = 20 kg

Average price of the mixture: 22,800 frw / 20 kg = 1,140 frw per kilogram