Correct Answer - Option 4 : Rs.4000
Given:
Total principal = Rs. 10000
Rate = 6% and 4%
Time = 2 years
Formula Used:
S.I = PRT/100
Where,
S.I = Simple interest, P = Principal,
R = Rate of interest, T = Time duration
Calculation:
Let the principal at the rate of 6% and 4% be x and (10000 - x) respectively,
According to the question, we have
(x × 6 × 2)/100 = {(10000 - x) × 4 × 2}/100
⇒ 12x = 80000 - 8x
⇒ 20x = 80000
⇒ x = 4000
∴ The principal at the rate of 6% is Rs. 4000.