Correct Answer - Option 2 : 900%
Given
Amount = 28 Principal
Time = 3 years
Formula used
Simple interest = (principal × rate × time)/100
Amount = Principal + Simple interest
Calculation
Amount = 28 principal
Amount = Principal + (Principal × rate × 3)/100
28 Principal = Principal + (Principal × rate × 3)/100
27 Principal = (principal × rate × 3)/100
(27 × 100)/3 = rate
900% = rate