If x, y, z are three sum of money such that y is the simple interest on x and z is the simple interest on y for the same time and at the same rate of interest, then what is the relation between x, y, z we have – 

The simple interest on ₹ 4,000 in 3 years at the rate of x % per annum equals the simple interest on ₹ 5,000 at the rate of 12% per annum in 2 years. The value of x is 

A shopkeeper allows 23 % commission on his advertised price and still makes a profit of 10 %. If he gains Rs.56 on one item, his advertised price of the item, in Rs. is 

The cost price of an article is Rs. 800. After allowing a discount of 10 %, a gain of 12.5 % is made. Then the marked price of the article is 

If a person purchases a shirt, he gets 6 % discount. However, if he purchases two shirts, he gets 5 % on the first and 8 % on the second. If the price paid by the person for two shirts is ₹ 925, then what will be the marked price of each shirt? 

With a 5 % discount on the cost of sugar, a buyer could purchase 2 kg. more sugar for ₹ 608. Original selling price of sugar is. 

A seller marks his goods 30 % above their cost price but allows 15 % discount for cash payment. His percentage of profit when sold in cash is 

In a class, the average score of girls in an examination is 73 and that of boys is 71. The average score for the whole class is 71.8. Find the percentage of girls.