The producer sells a good to the wholesaler at a profit of 20% and the wholesaler sells it to the retailer at a profit of 10%. What is the original price of the good (in taka) if the retailers buys it for Tk. 244?      

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Retailer's buying price = whole seller's selling price = Tk. 244

At 10% profit, if whole seller's selling price is Tk. 110 then buying price = Tk. 100

So, If whole seller's selling price is Tk. 244 then buying price = (100×244)/110 = Tk. 221.82

At 20% profit,

If selling price be Tk. 120 then cost price is = Tk.100

So,   "        "       "     221.82   "           = Tk. (100×221.82)/120

                                                  =184.85 (Ans.)