How much should a person lend at simple rate of interest of `15%` in order to have `Rs.784` as interest at the end of `1 1/2` years

A sum of Rs. 12660 lent on simple interest at the rate of 15% p.a. for 5 years. Find the amount at the end of 5 years.

Anita takes a loan of Rs.5,000 at 15% per year as rate of interest. Find the interest she has to pay at the end of one year.

Anita takes a loan of Rs 5000 at 15% per year at rate of interest. Find the interest she has to pay at end of one year.

25,000 are invested at 15% p.a. for 1 year. Find the interest at the end of 1 year and also the amount.

A person deposited Rs. 500 for 4 years and Rs, 600 for 3 years at the same rate of simple interest in a bank. Altogether he received Rs. 190 as interest. The rate of simple interest per annum was :