A fruit seller sells 20 apples for Tk. 900 and suffers a loss equal to the cost price of 5 apples. Find the cost price of one apple.

Question: A fruit seller sells 20 apples for Tk. 900 and suffers a loss equal to the cost price of 5 apples. Find the cost price of one apple.Solution:Let,cost price of 1 apple is = Tk. x∴ cost price of 20 apples is = Tk. 20x∴ cost price of 5 apples is = Tk. 5xWe know,Cost price - Selling price = Loss20x - 900 = 5x⇒ 20x - 5x = 900⇒ 15x = 900⇒ x = 900/15∴ x = 60∴ Cost price of 1 apple is Tk. 60