Find the interest earned at the end of one year on a sum of ₹6800 at 12% simple ineterest per annum.
The simple interest on a certain sum of money at 10% per annum is Rs. 6,000 in 2 years. Find :
(i) the sum.
(ii) the amount due at the end of 3 years and at the same rate of interest compounded annually.
(iii) the compound interest earned in 3 years.