Arun buys one kilogram of apples for Rs . 120 and sells it to Swati gaining 25 %. Swati sells it to Divya and Divya again sells it for Rs. 198, making a profit of 10 %. What is the profit percentage made by Swati? 

A trader purchased a gift box for Rs. 150. What should be the marked price on the gift box so that after allowing a discount of 10 %, he makes a profit of 10 %? 

If a²+b²+c² = 2(a – b – c) – 3 then the value of 4a – 3b + 5c is 

If the sum and difference of two number are 20 and 8 respectively, then the difference of their squares is: 

The number, whose square is equal to the difference between the squares of 975 and 585, is: 

Which smallest number must be added to 2203 so that we get a perfect square? 

The smallest positive integer when multiplied by 392, the product is a perfect square, is 

Of the three numbers, the second is twice the first and it is also thrice the third. If the average of three numbers is 44, the difference of the first number and the third numbers is: