A merchant buys two articles for Taka 1400. He sells one of them at a profit of 20% and the others at a loss of 8%. He makes no profit or loss in the end. What is the selling price of the article that he sold at a loss?

মনে করি,
loss এ sell করা article এর cost price x
profit এ sell করা article এর cost (1400 - x)
এখন, overall কোন profit বা loss নেই,
অর্থ্যাৎ,
দুই article এর profit এবং loss equal.
8x/100 = 20/100(1400 - x)
⇒ 8x = 28000 - 20x
⇒ 28x = 28000
⇒ x = 28000/28
⇒ x = 1000.
অর্থ্যাৎ, Selling price of the article sold at 8% loss = 920 Tk.