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Practice Questions on Percentages Video Lecture | CAT Made Easy - Video Lectures by Nishant Sir | IIM K

FAQs on Practice Questions on Percentages Video Lecture - CAT Made Easy - Video Lectures by Nishant Sir - IIM K

1. What is the importance of understanding percentages for competitive exams like CAT?
Ans. Understanding percentages is crucial for competitive exams like CAT as it frequently appears in quantitative aptitude sections. Percentages help in solving problems related to profit and loss, discounts, interest rates, and comparisons between different quantities. Mastering this concept can enhance problem-solving speed and accuracy, which are vital for achieving a good score.
2. How can I efficiently calculate percentages without a calculator during the exam?
Ans. To calculate percentages efficiently without a calculator, you can use simple techniques such as breaking down the percentage into smaller, manageable parts. For example, to find 15% of a number, first calculate 10% (by dividing the number by 10) and then add half of that value (5%). Memorizing common percentage equivalents, such as 50% = 1/2, 25% = 1/4, and 75% = 3/4, can also speed up calculations.
3. What are some common percentage problems that frequently appear in CAT?
Ans. Common percentage problems in CAT include calculating percentage increase or decrease, finding the percentage of a total, and solving problems related to profit and loss. Additionally, questions may involve multiple percentages, such as calculating overall percentage marks from different subjects or determining the final price after successive discounts.
4. Can you explain the relationship between percentages, fractions, and decimals?
Ans. Percentages, fractions, and decimals are different ways of expressing the same concept of parts per hundred. A percentage is a fraction with a denominator of 100. For example, 25% can be expressed as 25/100 or 0.25 in decimal form. Understanding this relationship helps in converting between the three formats, which is often necessary in quantitative problems.
5. What strategies can I use to improve my speed in solving percentage problems for the CAT?
Ans. To improve speed in solving percentage problems, practice is essential. Regularly solving previous years' question papers and taking mock tests can help. Additionally, familiarize yourself with shortcut methods and techniques, such as using approximate values for quick calculations and practicing mental math to reduce dependence on paper and pencil during the exam.
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