A sum of money is paid back in two equal annual installments of ₹22,050 each, allowing 5% interest per annum compounded annually. The sum borrowed was:

A sum of ₹21,000 is borrowed at a rate of 10% p.a. compound interest, compounded annually. If it is returned in two equal annual installments, what is the amount of each installment?

A cooking stove is available for ₹520 cash down payment followed by four equal monthly installments of ₹520 each. If the rate of simple interest is 25% per annum, what is the cash price of the stove?