Correct Answer - Option 1 : 4 Years

**Given:**

A = Rs. 7680

P = Rs. 4800

R = 15%

**Formula used:**

I = P × R × N/ 100

A = P + I

Where, P = Principal amount, R = Rate of interest, N = number of years and I = Simple interest

**Calculation:**

I = 7680 – 4800

⇒ I = Rs. 2880

⇒ 2880 = 4800 × 15 × N/ 100

⇒ N = 60/ 15

⇒ N = 4

**∴ N = 4 years**