Answer :
The profit percent of the shopkeeper is 20%.
To find the profit percent, first, we need to calculate the cost price (C.P.) per kilogram of the mixture.
C.P. per kilogram of mixture = (4/9) × 12.50₃ + (5/9) × 14₃ = 137.22₃
Next, we calculate the profit per kilogram by subtracting the cost price from the selling price.
Profit per kilogram = 16₃ - 137.22₃ = 27.78₃
Now, to find the profit percent, we use the formula:
Profit percent = (Profit / C.P.) × 100
Substituting the values:
Profit percent = (27.78₃ / 137.22₃) × 100 ≈ 20%
Therefore, the shopkeeper's profit percent is 20%.
