Correct Answer - Option 1 : Rs. 3100

**Given****∶**

The rate of interest for the first 4 years is 6%,

The rate of interest for the next 2 years is 4%,

The rate of interest for the beyond 6 years is 8%

S.I. = Rs. 1984

**Formula** **Used**∶

S.I. = PRT/100

**Calculation∶**

Let the Principal be 'P' .

S.I. @6% 4 years,

(P× 6× 4)/100 = 24 P/100

S.I. @4% for 2 years,

(P× 4 × 2)/100 = 8P/100

S.I.for the next 4 years,

(P × 8 × 4)/100 = 32P/100

Total S.I = 24/100 + 8P/100 + 32P/100

⇒ 64 P/100

But S.I. = 1984

⇒ 64 P/100 = 1984

⇒ P = 3100

**∴ The sum of money is of Rs 3100.**