Correct Answer - Option 1 : Rs. 3500
Given:
Time(T) = 3 years
Rate (R) = 8% pa
Amount for CI = Rs. 8000
Time for CI = 2 yr
Rate for CI = 10%
Calculations:
CI = [8000 × (1 + 10/100)2 – 8000]
⇒ (8000 × 11/10 × 11/10 - 8000)
⇒ (9680 - 8000)
⇒ 1680
∴ Sum = 840 × 100 / 3 × 8 = 3500 {∴ SI = 1680 / 2 = 840}
The sum placed on simple interest is Rs. 3500.