A tradesman sold and article at a loss of 20% . If the selling price had been increased by Tk. 100 . there would have been a gain of 5% . what was the cost price of the article ?
A tradesman sold and article at a loss of 20% . If the selling price had been increased by Tk. 100 . there would have been a gain of 5% . what was the cost price of the article ? Correct Answer TK. 400
Let cost price be Tk.x then, (105% of x) - (80% of x ) = 100 ⇒25x100 = 100 ⇒x4 = 100 ∴ x = 400 So, cost price = Tk. 400