CLAT > Quantitative Techniques for CLAT > How to solve problems based on Percentage (Part - 1)
How to solve problems based on Percentage (Part - 1) Video Lecture - Quantitative Techniques for CLAT
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FAQs on How to solve problems based on Percentage (Part - 1) Video Lecture - Quantitative Techniques for CLAT
| 1. How do I calculate the percentage increase or decrease? |  |
Ans. To calculate the percentage increase or decrease, you need to follow these steps:
1. Find the difference between the new and old value.
2. Divide the difference by the old value.
3. Multiply the result by 100 to get the percentage increase or decrease.
For example, if the old value is 50 and the new value is 70, the percentage increase would be [(70-50)/50] x 100 = 40%.
| 2. How can I find the original value after a percentage increase or decrease? | |
Ans. If you have the final value (after the increase or decrease) and want to find the original value, you can use the following formula:
Original value = Final value / (1 + (Percentage increase or decrease / 100))
For example, if the final value is 120 after a 20% increase, the original value would be 120 / (1 + (20/100)) = 100.
| 3. What is the formula to calculate percentage? | |
Ans. The formula to calculate percentage is:
Percentage = (Part / Whole) x 100
Here, the "Part" refers to the portion or value you want to find the percentage of, and the "Whole" refers to the total or complete value.
| 4. How can I calculate the percentage of a number? | |
Ans. To calculate the percentage of a number, follow these steps:
1. Divide the number by 100.
2. Multiply the result by the desired percentage.
For example, to find 20% of 80, you would divide 80 by 100 and then multiply the result by 20: (80 / 100) x 20 = 16.
| 5. How do I calculate the percentage change between two numbers? | |
Ans. To calculate the percentage change between two numbers, use the following formula:
Percentage change = ((New value - Old value) / Old value) x 100
For example, if the old value is 50 and the new value is 70, the percentage change would be ((70-50)/50) x 100 = 40%.
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