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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 807 · 40 questions
TalentJR

The method (Start value is 100%): New value after a rise of p%: value + p% of value. After a fall: value − p% of value. Percent change = change ÷ starting value × 100. Two changes a% and b% one after the other: a + b + (a × b) ÷ 100, with a fall counted as minus.

NameDateTime takenScore ___ / 40
  1. 1.A shop sells 900 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  2. 2.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  3. 3.The price of a school bag changes from ₹4200 to ₹5040. By what percent did it go up?
  4. 4.A shop sells 1300 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  5. 5.The price of a school bag changes from ₹2780 to ₹2502. By what percent did it come down?
  6. 6.A shop sells 3560 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  7. 7.A water tank holds 3320 litres. 10% of the water is used. How many litres are left?
  8. 8.The price of a bicycle is ₹540. It goes up by 10%. What is the new price (in ₹)?
  9. 9.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  10. 10.A shop sells 1340 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  11. 11.The price of a school bag changes from ₹1280 to ₹1536. By what percent did it go up?
  12. 12.A town has 3400 people. Its population grows by 50%. How many people live there now?
  13. 13.A town has 2460 people. Its population grows by 50%. How many people live there now?
  14. 14.The price of a bicycle is ₹1160. It goes up by 10%. What is the new price (in ₹)?
  15. 15.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
  16. 16.The price of a school bag changes from ₹2700 to ₹2295. By what percent did it come down?
  17. 17.The price of a school bag changes from ₹3760 to ₹4700. By what percent did it go up?
  18. 18.The price of a school bag changes from ₹1300 to ₹1625. By what percent did it go up?
  19. 19.The price of a school bag changes from ₹2240 to ₹2016. By what percent did it come down?
  20. 20.The price of a school bag changes from ₹320 to ₹224. By what percent did it come down?
  21. 21.A water tank holds 2140 litres. 40% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹4600 to ₹3220. By what percent did it come down?
  23. 23.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  24. 24.The price of a bicycle is ₹840. It goes up by 5%. What is the new price (in ₹)?
  25. 25.The price of a school bag changes from ₹3080 to ₹1848. By what percent did it come down?
  26. 26.The price of a school bag changes from ₹480 to ₹576. By what percent did it go up?
  27. 27.A shop sells 3240 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  28. 28.A town has 4040 people. Its population grows by 25%. How many people live there now?
  29. 29.A water tank holds 820 litres. 30% of the water is used. How many litres are left?
  30. 30.The price of a bicycle is ₹4880. It goes up by 10%. What is the new price (in ₹)?
  31. 31.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  32. 32.A shop sells 3700 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  33. 33.A town has 4000 people. Its population grows by 40%. How many people live there now?
  34. 34.The price of a bicycle is ₹3380. It goes up by 15%. What is the new price (in ₹)?
  35. 35.A price comes down by 25% and then comes down by 25% more. By what percent has it come down in all? =
  36. 36.The price of a school bag changes from ₹3260 to ₹4890. By what percent did it go up?
  37. 37.The price of a bicycle is ₹3640. It goes up by 15%. What is the new price (in ₹)?
  38. 38.A water tank holds 2560 litres. 50% of the water is used. How many litres are left?
  39. 39.A town has 2480 people. Its population grows by 15%. How many people live there now?
  40. 40.A town has 2740 people. Its population grows by 40%. How many people live there now?

Answer key

  1. 1260
  2. 43
  3. 20
  4. 1560
  5. 10
  6. 4272
  7. 2988
  8. 594
  9. 35
  10. 1474
  11. 20
  12. 5100
  13. 3690
  14. 1276
  15. 24
  16. 15
  17. 25
  18. 25
  19. 10
  20. 30
  21. 1284
  22. 30
  23. 9.25
  24. 882
  25. 40
  26. 20
  27. 3564
  28. 5050
  29. 574
  30. 5368
  31. 72.5
  32. 4810
  33. 5600
  34. 3887
  35. 43.75
  36. 50
  37. 4186
  38. 1280
  39. 2852
  40. 3836

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