Practicing Success
Practicing Success
CUET Preparation Today
Rs.16 becomes Rs.81 in four years at compound interest. The rate of interest per annum is: |
45% 50% 60% 32% |
50% |
In 3 years : Principal : Amount = 16 : 81 = (2)4 : (3)4 In 1 year : Principal : Amount = \(\sqrt[4]{2^4 }\) : \(\sqrt[4]{3^4 }\) = 2 : 3 Interest = 3 - 2 = 1R Interest rate = \(\frac{1}{2}\) × 100% = 50% |
