The simple interest on a certain sum for \(3\frac{1}{2}\) years at the rate of 10% per annum is Rs. 2940. What will be the compound interest (in Rs.) on the same sum for \(1\frac{1}{2}\) years at the same rate when interest is compounded half-yearly (nearest to a rupee)?
Pipes A and B can fill a tank in 16 hours and 24 hours, respectively, and pipe C alone can empty the full tank in x hours. All the pipes were opened together at 10:30 AM, but C was closed at 2:30 PM. If the tank was full at 8:30 PM on the same day, then what is the value of x?
The marked price of an article is 50% above cost price. When marked price is increased by 20% and the selling price is increased by 20%, the profit doubles. If original marked price is Rs 300, then the original selling price is:
The marked price of an article is ₹1500. If two successive discounts, each of x%, on the marked price is equal to a single discount of ₹587.40, then what will be the selling price of the article if a single discount of x% is given on the marked price?