In how many years will the simple interest on a sum of money be equal to the principle at rate of $12\frac{2}{4}$ % p.a. ?

7 years 5 years 8 years 6 years

8 years

Let principal = P Simple interest on a sum of money be equal to the principle. So , Simple Interest = P We know , Simple Interest = \(\frac{Principal ×Rate × Time }{100}\) P = \(\frac{P × 50 × Time }{4 × 100}\) Time = 8 years