CAT Exam > CAT Videos > Quantitative Aptitude (Quant) > Shortcuts & Tricks : Percentage
Shortcuts & Tricks : Percentage Video Lecture | Quantitative Aptitude (Quant) - CAT
FAQs on Shortcuts & Tricks : Percentage Video Lecture - Quantitative Aptitude (Quant) - CAT
| 1. How do you calculate percentages quickly? |  |
Ans.To calculate percentages quickly, you can use simple shortcuts. For example, to find 10% of a number, simply move the decimal point one place to the left. For 5%, divide the 10% result by 2. For 20%, double the 10% result. This method allows for quick mental calculations without the need for a calculator.
| 2. What is the formula for calculating percentage? | |
Ans.The formula for calculating percentage is: (Part/Whole) x 100. This means you take the part of the total you are interested in, divide it by the whole amount, and then multiply by 100 to get the percentage.
| 3. How can I find the percentage increase or decrease? | |
Ans.To find the percentage increase, use the formula: ((New Value - Old Value) / Old Value) x 100. For percentage decrease, the formula is: ((Old Value - New Value) / Old Value) x 100. This helps to understand how much a value has changed in percentage terms.
| 4. Are there any mental math tricks for calculating percentages of common numbers? | |
Ans.Yes, there are several mental math tricks. For instance, to find 15% of a number, you can calculate 10% and then add half of that 10% to it. For 25%, simply divide the number by 4. These tricks can save time and simplify calculations.
| 5. Why is it important to understand percentages in everyday life? | |
Ans.Understanding percentages is crucial in daily life for budgeting, shopping discounts, interest rates, and data interpretation. It helps individuals make informed decisions in financial matters, assess savings, and understand statistical information presented in various contexts.
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Video Description: Shortcuts & Tricks : Percentage for CAT 2025 is part of Quantitative Aptitude (Quant) preparation.
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