Find the simple interest and amount on each of the following : (i) ₹ 8400 for 4 years at $8 \%$ per annum. (ii) ₹ 50000 for 3 years $12 \frac{1}{2} \%$ per annum. (iii) ₹ 9275 for 2 years at $7 \frac{1}{2} \%$ per annum.
Answer
(i) ₹2688, ₹11088 (ii) ₹18750, ₹ 68750 (iii) ₹1391.25, ₹10666.25