A person , giving two equal loans, one at a rate of simple interest of `8%` per annum and the other at a rate of simple interst of `6%` per annum, earns a total interest of `Rs756` after a period of time of `18` months. Find the total amount of money he has given as loan.

If the rate of simple interest is 12% per annum, the amount the would fetch interest of Rs. 6000 per annum is :

To repay a loan of Rs6450 at a rate of simple interest of 5% per annum in 4 years, find the amount of each instalment.

Total interest of Rs 400 for 2 1/2 years at the rate of 6% simple interest per annum is

The interest of some of money for one month at the rate of simple interest 5% per annum is Rs1. Find the some of money.

If the rate of simple interest per annum be 6% , then find the simple interest of Rs 3500 from 5th January 31st March 1954 .

Find the Simple interest on ₹ 6300 at 8% per annum for 8 months

The total interest at the rate of simple interest of 5% per annum of Rs300 and at the rate of simple interest of 3% per annum of Rs500 for 2 years more period of time, is together Rs150 . Find the period of time for which the interest of two principals have been claculated.

A certain principal amounts Rs2750 in 2 years at a rate of simple interest of 5% per annum. Then find the rate of simple interest in percent per annum for which the principal amounts Rs3000 in 2 years.

X invested an amount of Rs. 12000 at the simple interest rate of 10% per annum and another amount at the simple interest rate of 20% per annum. The total interest earned at the end of one year on the total amount invested became 14% per annum. Find the total amount invested invested at 20%.

A person borrowed Rs 10000 from four men. If he had to repay the first man for his Rs 2000 at the rate of simple interest of 8% per annum, the second man for his Rs 4000 at the rate of simple interest of 7(1)/(2)% per annum and the third man for his Rs 1400 at a rate of simple interest of 8(1)/(2)% per annum, then in what rate of simple interest in percent per annum, the fourth man should be paid for his rest part of principal so as to the average rate of simple interest be 8.13% per annum?