DELHI POLICE MATHS QUIZ

Priya invested a certain amount of money and got back an amount of Rs. 8800 after 3 years. If the rate of simple interest is 40%, what is the principal amount invested by Priya?

Abhay borrows Rs. 2500 from Ajay at simple interest at the rate of $12\mathrm{\%}$ per annum. What amount of money (in rupees) should Abhay pay to Ajay after 3 years to clear the debt?

A person takes a loan of Rs. 500 at $20\mathrm{\%}$ Simple interest. He return Rs. 200 at the end of 1 year. In order to clear his dues at the end of 2 years, he would pay:

A sum of Rs 4800 becomes Rs 5,300 in a certain time period at a certain rate of interest. If the rate of interest is reduced by 15% and the time period is tripled, what will be the new amount?

Simple interest on a certain sum for 8 months at $4\mathrm{\%}$ for annum is Rs. 172 less than the simple interest on the same sum of 15 months at $5\mathrm{\%}$ per annum. The sum is:

The simple interest (in ₹) on ₹ 8,000 for 6 months at the rate of 12 paise per rupee per month is:

A sum of ₹ x amounts to ₹ 10,483 after 3 years and to ₹ 12,727 after 7 years at the same rate per cent per annum simple interest. The value of x is:

A sum of ₹ 8,400 amounts to ₹ 10,899 in 3$\frac{1}{2}$ years at a certain rate per cent per annum, at simple interest. What will be the amount of the same sum at simple interest for 4$\frac{2}{3}$ years at double the rate of interest?

₹ 5,000 earned a simple interest of ₹ 300 in 2 years. The rate of interest is