Find the principal amount when the Simple Interest (S.I.) is ₹1,800, the rate of interest is 4% per annum, and the time is 8 months.
मूलधन (Principal) ज्ञात कीजिए, जब साधारण ब्याज (S.I.) ₹1,800 हो, ब्याज की दर 4% प्रति वर्ष हो और समय 8 महीने हो।
Answer और ExplanationAnswer and explanation
Answer: (D) ₹67,500
T = 8 महीने = 23 वर्ष
मूलधन (Principal) P = SI × 100R × T = 1800 × 1004 × 23 = 180000 × 38 = ₹67,500
✓
मूलधन ₹67,500 है।
T = 8 months = 23 year
P = SI × 100R × T = 1800 × 1004 × 23 = 180000 × 38 = ₹67,500
✓
The principal is ₹67,500.
SMART APPROACH
RT = 4 × 23 = 83%। तो P का 83% = 1800 ⇒ P = 1800 × 3008 = ₹67,500।
RT = 4 × 23 = 83%. So 83% of P = 1800 ⇒ P = 1800 × 3008 = ₹67,500.
Source: UP Police Constable · 10 Jun 2026 · Shift 2। Solution: Prashant Sir, Vijayastra।Source: UP Police Constable · 10 Jun 2026 · Shift 2. Solution by Prashant Sir, from Vijayastra.