Simple Interest (SI)
OpenCalculate simple interest and amount.
General Aptitude
Simple Interest / Compound Interest Tutorial
SI and CI are frequently asked in banking exams. Remember: SI calculates on original principal, CI on principal + accumulated interest.
Key Formulas
- SI = (P × R × T) / 100
- Amount = P + SI
- CI = P(1 + R/100)^T - P
- Amount = P(1 + R/100)^T
Compound Interest (CI)
OpenCalculate compound interest.
Simple Interest (SI)
Calculate simple interest and amount.
When to Use: For questions with SI formula.
Step-by-Step Method
- SI = (P × R × T) / 100
- Amount = P + SI
- P = Principal, R = Rate%, T = Time in years.
Worked Example
Question: Rs. 5000 at 6% p.a. for 5 years. Find SI and Amount.
- SI = (5000 × 6 × 5) / 100
- SI = (5000 × 30) / 100 = 1500
- Amount = 5000 + 1500 = 6500
Final Answer: SI = 1500, Amount = 6500
Option Analysis
Common Mistakes
Quick Shortcut: SI = P × R × T / 100. Remember P, R, T in years.
Generated 5 focused questions for this pattern.
Q1. Two values are in ratio 4:5. If total is 230, find first value.
Answer: 102
Explanation: Step 1: Total parts = 4+5. Step 2: One part = 230/(9). Step 3: First value = 4 parts = 102.
Q2. Two values are in ratio 4:6. If total is 200, find first value.
Answer: 80
Explanation: Step 1: Total parts = 4+6. Step 2: One part = 200/(10). Step 3: First value = 4 parts = 80.
Q3. Two values are in ratio 6:3. If total is 80, find first value.
Answer: 53
Explanation: Step 1: Total parts = 6+3. Step 2: One part = 80/(9). Step 3: First value = 6 parts = 53.
Q4. Two values are in ratio 2:6. If total is 200, find first value.
Answer: 50
Explanation: Step 1: Total parts = 2+6. Step 2: One part = 200/(8). Step 3: First value = 2 parts = 50.
Q5. Two values are in ratio 7:3. If total is 110, find first value.
Answer: 77
Explanation: Step 1: Total parts = 7+3. Step 2: One part = 110/(10). Step 3: First value = 7 parts = 77.