Percetage Increase or Decrease
Percentage Increase or Decrease
Changes in quantities are often expressed as a percentage of the original quantity.
For Example :
To calculate the percentage increase:
To calculate percentage decrease:
There are two different methods which can be used to solve percentage increase or decrease problems.
Method : Finding Percentage Increase or Decrease with two steps :
Step 1 : Find the size of the increase or decrease.
Step 2 : Apply the change to the original quantity by addition or subtraction.
Example 1 : A fruit grower picked 1720 kg of apples last year. This year she expects her crop to be 20% bigger. How many kilograms of apples does she expect to pick this year ?
Step 1 : Size of increase = 20% of 1720 kg = 0.2 1720 kg = 344 kg
Step 2 : New amount = 1720 + 344 kg = 2064 kg
The fruit grower expects to pick 2064 kg.
What is 30 % decrease in a temperature of 40° Celsius ? | |||
| Right Option : B | |||
| View Explanation | |||
Over the past 10 years, the population of a town has increased by 25% The population of the town 10 years ago was 18000 What is the population of the town now? | |||
| Right Option : A | |||
| View Explanation | |||
A TV normally costs Rs 520. In a sale, all prices are reduced by 10% . Calculate the sale price of the TV | |||
| Right Option : A | |||
| View Explanation | |||
Students / Parents Reviews [10]
My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
