Correct Answer - Option 4 : Rs. 1,600

**Given:**

Compound interest on a certain sum is 652.80

**Concept:**

Compound interest = P × {(1 + R/100)^{T} - 1} Where, P = Principle, T = Time, R = Rate

**Calculation:**

Let be assume the principle is P and the rate for half-yearly = 8/2 = 4% T = 2

⇒ P × {(1 + 4/100)^{2} - 1} = 652.80

⇒ P = 8000

⇒ Simple interest = (8000 × 4 × 5)/100 = 1600

**∴ The required result will be 1600.**