Correct Answer - Option 1 : Rs. 2,000
Given -
principal = Rs. 9,000
Invested in three parts at 3%, 4% and 6% on simple interest
Formula used -
S.I = (principal × rate × time)/100
Solution -
Let the amount be x, y and z respectively.
⇒ s.i = (x × 3 × 1/100) = (y × 4 × 1/100) = (z × 6 × 1/100)
⇒ x : y : z = (1/3) : (1/4) : (1/6)
⇒ x : y : z = 4 : 3 : 2
⇒ the amount invested at 6% = (2 × 9000/9) = Rs. 2000
∴ amount invested at 6% is Rs, 2.000.