Practicing Success
A sum of ₹9000 amounts to ₹13356 at a certain rate percent per annum in $4\frac{2}{5}$years at simple interest. What will be the simple interest on the same sum at double the rate for $2\frac{1}{3}$years. |
₹4640 ₹4760 ₹4260 ₹4620 |
₹4620 |
Simple Interest = 13356 - 9000 = 4356 Simple Interest = \(\frac{Principal ×Rate × Time }{100}\) 4356 = \(\frac{9000 ×Rate × 22 }{5×100}\) Rate = 11% Now , Double of rate = 2 × 11% = 22% Simple interest = \(\frac{9000 × 7 × 22}{3×100}\) = Rs. 4620 |