Arithmetic Aptitude Formula
Arithmetic Aptitude formulas and a topic-wise mock test for quantitative aptitude placement exams like TCS NQT, Infosys, and Wipro. Revise, then practice.
Key Arithmetic Aptitude Formulas
Arithmetic Aptitude - Basic Concepts
Arithmetic Aptitude covers numerical calculations, percentages, profit & loss, ratio, averages, simple and compound interest, time & work, speed & distance, and other quantitative concepts.
- Percentage = (Value / Total) × 100
- Ratio = First Quantity : Second Quantity
- Average = Sum of Observations / Number of Observations
- Profit = Selling Price - Cost Price
- Loss = Cost Price - Selling Price
Arithmetic Aptitude - Important Formulas
Essential formulas frequently used in arithmetic aptitude questions.
- Percentage = (Part / Whole) × 100
- Profit% = (Profit / Cost Price) × 100
- Loss% = (Loss / Cost Price) × 100
- Selling Price = Cost Price × (100 + Profit%) / 100
- Selling Price = Cost Price × (100 - Loss%) / 100
- Simple Interest = (P × R × T) / 100
- Amount (SI) = Principal + Simple Interest
- Compound Interest = Amount - Principal
- Amount = P × (1 + R/100)^T
- Average = Sum / Number of Terms
- Ratio = First Quantity / Second Quantity
- Time & Work: Work = Rate × Time
- Efficiency ∝ 1 / Time
- LCM × HCF = Product of Two Numbers
Arithmetic Aptitude - Practical Examples
Common arithmetic problem-solving approaches.
- Example: Cost Price = ₹500, Profit = 20% → Selling Price = 500 × 120/100 = ₹600
- Example: Principal = ₹10000, Rate = 8%, Time = 2 years → SI = ₹1600
- Example: Average of 10, 20, 30 = (10+20+30)/3 = 20
- Type 1: Percentage increase/decrease questions
- Type 2: Profit & Loss calculations
- Type 3: Interest, Ratio, Average, and Time & Work problems
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