A shopkeeper expects a gain of 22.5% on his cost price. If in a week, his sale was of TK. 392, what was his profit?
A
TK. 18.20
B
TK.70
C
TK.72
D
TK.88
Correct Answer: TK.72
22.5% gain = 122.5Tk. Selling price 122.5 Tk. then profit = 22.5 Tk. Selling price 1 Tk then profit = 22.5/122.5 Tk. Selling price 392 Tk then profit = ( 22.5×392)/ 122.5 Tk. = 72 Tk.