A department store receives a shipment of 1,000 shirts, for which it pays $9,000. The store sells the shirts at a price 80 percent above cost for one month, after which it reduces the price of the shirts to 20 percent above cost. The store sells 75 percent of the shirts during the first month and 50 percent of the remaining shirts afterward. How much gross income did sales of the shirts generate?

Correct Answer: Tk 13500
1 টি shirt এর actual price = 90001000 = 9Tk প্রথম মাসের shirt এর দামে 80% above the cost = 9×80100 = 7.2 Tk 75% বিক্রি = 75100×1000 = 750 টি shirt বিক্রি তাহলে প্রথম মাসে earn = (7.2 + 9) × 750 = 12150 TK remaining shirt = (1000 - 750) = 250; এর 50% = 250×12 = 125 টি shirt এখন 20% above the cost এ প্রতি shirt এর price = 10.8 Tk দ্বিতীয় মাসে earn = 10.8 × 125 = 1350 Total = 1350 + 12150 = 13500 Tk