A dealer allowed a discount of 25% on the marked price of Rs. 12000 on an article and incurred a loss of 10%. What discount should he allow on the marked price so that he gains Rs. 440 on the article?

The profit earned on selling two articles is $Rs. 80$ less than profit earned on selling three articles. If $20\%$ profit is earned on selling one article, then find the cost price of the article:

A and B started a business by investing $Rs. 18000$ and $Rs. 24000$ respectively. At the end of $4$th month from the start of the business, C joins with $Rs. 15000$. At the end of $8$th month B quits at which time C invests $Rs. 3000$ more. At the end of $10$th month B rejoins with the same investment. If profit at the end of the year is $Rs. 12005$, what is B's share of profit?

A shopkeeper bought a table marked at $₹200$ at successive discounts of $10\%$ and $15\%$ respectively. He spent $₹7$ on transport and sold the table for $₹208$. What will be his profit percentage?

Vinod purchased a Maruti van for $₹196000$. Rate of fall of price per year of this van is $14\frac{2}{7}\%$. What will be its price after two years?