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.
An adult ticket for the cinema costs $13.40 . A child ticket is half the price of an adult ticket. Mr and Mrs Becter and their six children go to see a movie. Mrs Becter has a voucher for 18% off. Work out how much Mrs Becter pays for the tickets. | |||
| Right Option : A | |||
| View Explanation | |||
What is 8% decrease in $ 400 ? | |||
| Right Option : A | |||
| View Explanation | |||
The population of a town decreased from 18,000 to 15,000 due to breakout of an epidemic. What is the percentage decrease in the population? | |||
| 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
7thMy 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
8thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
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
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
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
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
8thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
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.
Archit Segal
7thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
