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Profit= 320100×100=320 Tk. and selling price = 420 Tk.
∴Now, new cost price = 125% of 100Tk .=125 Tk.
∴New cost price = 420 Tk
∴Profit 420-125=295 Tk
∴Percentage of profit on selling price = 295420×100=70.24%=70%
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