Correct Answer - Option 2 : 6% p.a.

**Given:**

Principal, P = Rs 15,000

Time period, T = 3 years

Interest paid for 3 years = Rs 2700

**Concept used:**

Simple interest, SI = PRT/100

**Calculation:**

SI = PRT/100

⇒ 2700 = (15,000 × 3 × R)/100

⇒ R = 2700 × 100/(15,000 × 3)

⇒ 6%

**∴ The rate of interest is 6%.**