- Rs. 8400
- Rs. 8800
- Rs. 8210
- Rs. 8000

Option 4 : Rs. 8000

Given:

Simple interest = Rs. 3600

Time (T) = 3 years

Rate (R) = 15%

Concept:

Simple interest is the interest calculated on the principal portion of the loan or the original contribution to the saving account.

Formula Used:

Simple Interest = (P × R × T)/100

Where, P = Principal, R = Rate, T = Time

Calculation:

Let the principal be 'P'

Simple Interest = (P × R × T)/100

⇒ 3600 = (P × 15 × 3)/(100)

⇒ 3600 = 45P/100

⇒ P = 360000 ÷ 45

⇒ P = Rs. 8000

**∴ The principal amount is Rs. 8000**

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