Tips & Tricks: Percentage

Percentage Tips and Tricks for Government Exams

Introduction

• Percentage is most important chapter and its shortcut tricks are need to know why because it uses other chapters for calculation like data interpretation chapter so we first learn percentage shortcuts tricks and Percentage is  A fraction or a numerical expression or a ration with 100 assumed as denominator. So we can represent 1 percentage as 1%.
• Anything we learn in our school days was basics and that is well enough for passing our school exams. Now the time has come to learn for our competitive exams. For this we need our basics but also we have to learn something new. That’s where shortcut tricks are comes into action.

Theory

• We try to provide all types of shortcut tricks on percentage here. We request all visitors to read all examples carefully. These examples will help you to understand shortcut tricks on Percentage.
• Before starting anything just do a math practice set. Choose any twenty math problems and write it down on a page. Solve first ten math problems according to basic math formula. You also need to keep track of the time. After solving all ten math questions write down total time taken by you to solve those questions. Now go through our page for percentage shortcuts trick. After doing this go back to the remaining ten questions and solve those using shortcut methods. Again keep track of timing. You will surely see the improvement in your timing this time. But this is not all you need. You need more practice to improve your timing more.

Formula

1. We can express 1% as 1/100. (1 part of total 100 part).
Similarly, we can say 10% as 10/100 (10 part of total 100 part),
And 50% as 50/100 (50 part of total 100 part).
2. If a student get 40% marks in Math that means student got marks in math is 40 out of 100 of full marks.
3. To Express p/q as a percentage:
We express it as p/q = (p/qx100)% .
so we can express like 1/4 = (1/4×100)% = 25%.
and Now, 0.4 = 4/10 = (4/10 x 100)% = 40%.
4. If the price of a commodity increases by R%, then the reduction in consumption as not to increase the expenditure is [R / (100 + R) x 100]%
5. If the price of a commodity decreases by R%, then the increase in consumption as not to decrease the expenditure is [R / (100 – R) x 100]%
6. Results on Population

Let the population of  a town be P now and suppose it increases at the rate of R% per annual, then :

• Population after n years = P(1 + R / 100)n

• Population n years ago = P / (1 + R / 100)n

7. Result on Depreciation
Let the present value of a machine be P. Suppose it depreciates at the rate of R% per annual, then :

• Value of the machine after n years =P (1 – R / 100)n

• Value of the machine n years ago = P / (1 – R / 100)n

8. If A is R% more than B, then B is less than A by [R / (100 + R) x 100]%
If A is R% less than B, then B is more than A by [R / (100 – R) x 100]%

Solved Examples

Question for Tips & Tricks: Percentage
Try yourself:A reduction of 20% percent in the price of rice enables a housewife to buy 5 kg more for rupees 1200. The reduced price per kg of rice

Question for Tips & Tricks: Percentage
Try yourself:12 percent of the voters in an election did not cast their votes. In this election there are only two candidates. The winner by obtaining 45% of the total votes and defeated his rival by 2000 votes. The total number of votes in the election

Question for Tips & Tricks: Percentage
Try yourself:A number is first decreased by 25%. The decreased number is then increased by 20%. The resulting number is less than the original number by 40. Then the original number is –

The document Percentage Tips and Tricks for Government Exams is a part of the Bank Exams Course Tips & Tricks for Government Exams.
All you need of Bank Exams at this link: Bank Exams

Tips & Tricks for Government Exams

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FAQs on Percentage Tips and Tricks for Government Exams

 1. What is percentage?
Ans. Percentage is a way of expressing a number as a fraction of 100. It is often denoted by the symbol "%". For example, if we say 50%, it means 50 out of 100.
 2. How do you calculate percentage increase or decrease?
Ans. To calculate the percentage increase or decrease, you need to find the difference between the new value and the old value, divide it by the old value, and then multiply by 100. If the result is positive, it represents an increase, and if it is negative, it represents a decrease.
 3. How can I calculate a percentage of a number?
Ans. To calculate a percentage of a number, multiply the number by the percentage and divide by 100. For example, if you want to find 20% of 50, you would calculate it as (20 * 50) / 100 = 10.
 4. What is the difference between percentage and percentile?
Ans. Percentage and percentile are both ways of expressing proportions, but they have different meanings. Percentage represents a part of a whole, whereas percentile represents a position in a distribution. For example, if you score 80% on a test, it means you got 80 out of 100, but if you are in the 90th percentile, it means you scored better than 90% of the population.
 5. How do you calculate the percentage of increase or decrease between two numbers?
Ans. To calculate the percentage of increase or decrease between two numbers, first find the difference between the two numbers. Then, divide that difference by the absolute value of the original number. Finally, multiply the result by 100 to get the percentage. If the result is positive, it represents an increase, and if it is negative, it represents a decrease.

Tips & Tricks for Government Exams

65 videos|65 docs

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