Correct Answer - Option 4 : ₹2000

**Given:**

rate of interest per annum for the first two years is 4%.

The rate of interest for next four years is 6% and for the next three years is 8%.

**Formula used:**

simple interest = (P × R × T)/100

**Calculation:**

Total simple interest for 9 years = 1120

⇒ P × [(2 × 4) + (4 × 6) + (3 × 8)]\100 = 1120

⇒ P × 56/100 = 1120

⇒ P = 2000 Rs.

**∴ The sum is 2000 Rs.**