Bihar Police Constable Model Paper 4

Given:
Time = 3 years
Rate of interest = 5%
S.I = Rs. 180
Formula used:
S.I = PRT/100
Where, P = Principal
R = Rate of interest
T = Time
Calculation:
Rs. 180 = (P × 5 × 3)/100
⇒ Rs. 180 = 15P/100
⇒ Rs. 12 × 100 = P
⇒ Rs. 1200 = P
∴ The principal amount is Rs. 1200