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Basic Forms of Calculations: Percentages Video Lecture | CSAT Preparation - UPSC

207 videos|156 docs|192 tests

FAQs on Basic Forms of Calculations: Percentages Video Lecture - CSAT Preparation - UPSC

1. What is a percentage and how is it calculated?
Ans. A percentage is a way to express a fraction or a portion of a whole as a fraction of 100. It is calculated by dividing the part by the whole and multiplying the result by 100.
2. How can I calculate a percentage increase or decrease?
Ans. To calculate a percentage increase, subtract the original value from the new value, divide the result by the original value, and multiply by 100. To calculate a percentage decrease, follow the same steps but subtract the new value from the original value.
3. How do I find what percentage one number is of another number?
Ans. To find the percentage one number is of another number, divide the first number by the second number, and multiply the result by 100. This will give you the percentage.
4. Can percentages be added or subtracted?
Ans. Percentages cannot be added or subtracted directly. However, they can be converted into decimal form and then added or subtracted. After performing the addition or subtraction, the result can be converted back to a percentage if needed.
5. How do I calculate a percentage of a whole number?
Ans. To calculate a percentage of a whole number, multiply the whole number by the percentage as a decimal. For example, to find 25% of 80, multiply 80 by 0.25.
207 videos|156 docs|192 tests
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