Problem: A department store receives a shipment of 1.000 shirts. for which it pay Tk. 9,000. The store sells the  shirts at a price 80% above cost for one month. after which it reduces the price  of the shirts to 20% above cost. The store sells 75% of the shirts during the first month and 50% of the remaining shirts afterward. How much gross income did sales or the shirts generate?

Correct Answer: 13.500 Tk.

Explanation:

The cost price of 1.000 shins is 9.000 Tk.

SO, The cost price of I shirt is’ $\frac{9000}{1000}$=9 tk

Sales in 1st month = (75% of 1,000)) = 750 Shirts

Selling price of 750 shirt in 1st month = (750 x 9) + (750 x 9) of 80%

= 6,750+$\frac{750\times 9\times 80}{100}$=6,750+5,400 = 12,150 tk

so, Remaining shirt = 1,000 -750 = 250

so, 50% of remaining shirt after 1″ month’s sale = 250 of 50% = $\frac{250}{2}$ = 125 shirts

Then selline nrice is (125 X 9) + (125 X 9) of 20%

= (125×9)+$\frac{125\times 9\times 20}{100}$=1.125+225=1,350

so, Total sales = 12.150 + 1.350 = 13.500 Tk.

Gross Income = 13.500 Tk.