In object-oriented programming, an interface defines a contract that specifies a set of methods that implementing classes must provide. Interface methods can indeed have parameters, which are used to pass information to these methods when they are called. However, while an interface method specifies what parameters are required, it is the responsibility of the classes implementing the interface to provide the actual method bodies and handle these parameters appropriately. This means that while the interface outlines the method signatures, including their parameters, the concrete implementations in the classes are required to define how these parameters are used and processed. This approach ensures that any class implementing the interface adheres to the expected method signature and behavior, providing consistency across different implementations.
The cost price of an article is 30% less than its selling price. For how much profit was it sold? (Round off up to 2 decimal plac...
Ratio of the cost price of article ‘A’ to ‘B’ is 6:7, respectively. Article ‘A’ is marked up by 30% above its cost price and then sold at a ...
The cost price of 30 apples is Rs.120. If it is sold at 25% profit, then how many apples will be sold for Rs.70?
A bike is priced at Rs. 300 and sold after two successive discounts of 16% each. What is the final selling price?
A merchant initially raised the price of a product by 25% and subsequently by an additional 20%. After providing a 24% discount on the final price, he g...
The cost price of article A and B is Rs. ‘X’ and Rs. (X + 350), respectively. Article A is sold at 20% profit while article B is sold at 10%...
The ratio of the cost price and marked price of an article is 7:12, respectively. The article is sold after giving a discount of Rs. 540 such that there...
Each of the articles was marked 25% above its cost price and while selling 12% discount was given on it. The cost price of article M is Rs. 500 more tha...
A seller sold an item at a loss of 22%. If he had sold it for Rs. 2,200 more, then he would have earned a profit of 18%. Find the cost price of the item.
The total cost price of 12 articles is the same as the total selling price of 7 articles. Calculate the percentage profit made on the sale of each arti...