Sneha opened a cumulative time deposit account with a bank. She deposits Rs. 500 per month for `(1)(1)/(4)` years. If she receives Rs.300 as interest, find the rate of interest per annum.

Thsuhar opens a recurring deposit account with a bank and deposits Rs. 500 per month for 1(1)/(2) years. If he receives Rs. 570 as interest, then find the rate of interest offered by the bank.

Shahrukh opened a Recurring Deposite Account in a bank and deposited Rs 800 per month for 1(1)/(2) years. If he received Rs 15,084 at the time of maturity, find the rate of interest per annum.

Charan opened a cumulative time deposit account with a bank. For 1(1)/(2) years, he deposited Rs. 800 per month. He received in interest of Rs. 1140. find the rate of interest . (in % per annum)

Ahmed has a recurring deposit account in a bank. He deposits Rs 2,500 per month for 2 years. If the gets Rs 66,250 at the time of maturity, find : The rate of interest.

David makes a fixed deposit of Rs. 50,000 in a bank for 1(1)/(2) years. If the interest is compounded half the rate of interet per annum.