# For What Sum, The Simple Interest at n% for ‘n’ Years will be ‘n’?

- 100/2n
- 50/n
- 100/n
- 200/n

**Answer: (3) 100/n**

**Explanation:- **Let the sum be Rs. X.

**Given-**

Rate = n%, Time = n years and Simple interest = n

**Formula-**

**Simple Interest = P x R x T/100**

**Where, P = principal, R = rate, & T = time. **Then, n = X x n x n /100

X = 100/n

Hence, the answer is (3) 100/n.