CAT Exam > CAT Videos > CAT Made Easy - Video Lectures by Nishant Sir | IIM K > Problems on Basics of Percentage
Problems on Basics of Percentage Video Lecture | CAT Made Easy - Video Lectures by Nishant Sir | IIM K
FAQs on Problems on Basics of Percentage Video Lecture - CAT Made Easy - Video Lectures by Nishant Sir - IIM K
| 1. What are the basic concepts of percentages that one should understand for the CAT exam? |  |
Ans. Understanding percentages involves knowing how to calculate the percentage of a number, how to express one number as a percentage of another, and how to calculate percentage increase or decrease. Familiarity with these concepts is crucial, as they form the foundation for solving more complex problems related to percentages in competitive exams.
| 2. How do you calculate the percentage increase or decrease in a value? | |
Ans. To calculate the percentage increase, subtract the original value from the new value, divide by the original value, and then multiply by 100. For percentage decrease, subtract the new value from the original value, divide by the original value, and multiply by 100. The formula for percentage increase is ((New Value - Original Value) / Original Value) × 100, and for percentage decrease, it is ((Original Value - New Value) / Original Value) × 100.
| 3. What is the difference between simple percentages and compound percentages in percentage problems? | |
Ans. Simple percentages refer to calculations based on a fixed amount without taking into account any previous increases or decreases. In contrast, compound percentages involve calculating percentages on a progressively increasing or decreasing value, where the percentage is applied to the new total after every change. Understanding this difference is important for solving problems involving interest rates or repeated percentage changes.
| 4. How can percentages be used in real-life applications, and why are they important for the CAT exam? | |
Ans. Percentages are commonly used in various fields such as finance, marketing, and statistics. They help in understanding data such as profit margins, sales tax, discounts, and interest rates. For the CAT exam, being adept at percentage calculations can significantly aid in quantitative aptitude sections, helping candidates to solve problems quickly and accurately, which is essential for scoring well.
| 5. What strategies can be employed to solve percentage problems more efficiently in the CAT exam? | |
Ans. Some effective strategies include:
1. Memorizing key percentage values (e.g., 10%, 20%, 25%, etc.) to quickly calculate related percentages.
2. Using approximation techniques to simplify calculations.
3. Breaking down complex problems into simpler parts.
4. Practicing a variety of percentage problems to become familiar with different scenarios. Regular practice with time constraints can also help improve speed and accuracy in solving these problems during the exam.
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