Correct Answer - Option 3 : 5.5%

**Given:**

Sum = Rs. 5200

Time period = 2 years

**Formula used:**

SI = (P × R × T)/100

Where P = Principal

R = Rate of interest

T = Time period

SI = Interest earned

**Calculation:**

Interest earned in 2 years = Rs. (5772 – 5200)

⇒ Rs. 572

Now, according to the formula

⇒ Rs. (5200 × R × 2)/100 = Rs. 572

⇒ R = (572/104)%

⇒ R = 5.5%

**∴ Rate of interest is 5.5%**