CUET Preparation Today
An amount becomes 3 times of itself in 20 years. What is the rate of simple interest per annum? |
15% 10% 6.67% 6% |
10% |
Let Principal = 1 Amount = 3 × P = 3 So, Interest = Amount - Principal = 3 - 1 = 2 T = 20 years SI = \(\frac{P\;R\;T}{100}\) $2=\frac{1×R×20}{100}$ ⇒ R = 10%. |
