A merchant buys an article for Tk. 27 and sells it at a profit of 10 percent of the selling price. The selling price of the article is -

Question: A merchant buys an article for Tk. 27 and sells it at a profit of 10 percent of the selling price. The selling price of the article is -

Solution:
Let, the selling price of the article be Tk. p

Cost price = Tk. 27
Profit = 10% of p

Again,
Profit = Selling price - Cost price
⇒ 10% of p = p - 27
⇒ p - 10% of p = 27
⇒ 90% of p = 27
⇒ 9p/10 = 27
⇒ p = 27 × (10/9)
⇒ p = 30

Hence, The selling price of the article is Tk. 30