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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 66 · 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 town has 720 people. Its population grows by 20%. How many people live there now?
  2. 2.The price of a school bag changes from ₹2860 to ₹2002. By what percent did it come down?
  3. 3.The price of a bicycle is ₹3920. It goes up by 20%. What is the new price (in ₹)?
  4. 4.The price of a school bag changes from ₹2540 to ₹1270. By what percent did it come down?
  5. 5.A shop sells 4280 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  6. 6.The price of a school bag changes from ₹1980 to ₹2277. By what percent did it go up?
  7. 7.The price of a school bag changes from ₹2880 to ₹2448. By what percent did it come down?
  8. 8.The price of a school bag changes from ₹1420 to ₹1491. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹1160 to ₹1392. By what percent did it go up?
  10. 10.A water tank holds 3360 litres. 15% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹340 to ₹323. By what percent did it come down?
  12. 12.The price of a school bag changes from ₹600 to ₹900. By what percent did it go up?
  13. 13.A water tank holds 560 litres. 5% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹4200 to ₹3780. By what percent did it come down?
  15. 15.A water tank holds 2340 litres. 25% of the water is used. How many litres are left?
  16. 16.A water tank holds 1360 litres. 30% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹3180 to ₹4452. By what percent did it go up?
  18. 18.A water tank holds 1680 litres. 5% of the water is used. How many litres are left?
  19. 19.The price of a bicycle is ₹1620. It goes up by 50%. What is the new price (in ₹)?
  20. 20.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  21. 21.A water tank holds 3260 litres. 50% of the water is used. How many litres are left?
  22. 22.A town has 4880 people. Its population grows by 20%. How many people live there now?
  23. 23.A water tank holds 2520 litres. 50% of the water is used. How many litres are left?
  24. 24.A shop sells 3260 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  25. 25.The price of a school bag changes from ₹4560 to ₹5244. By what percent did it go up?
  26. 26.A water tank holds 220 litres. 20% of the water is used. How many litres are left?
  27. 27.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  28. 28.A water tank holds 1960 litres. 10% of the water is used. How many litres are left?
  29. 29.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  30. 30.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
  31. 31.A shop sells 2760 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  32. 32.A water tank holds 4800 litres. 5% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹4340 to ₹4991. By what percent did it go up?
  34. 34.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  35. 35.A water tank holds 3920 litres. 5% of the water is used. How many litres are left?
  36. 36.The price of a bicycle is ₹4780. It goes up by 15%. What is the new price (in ₹)?
  37. 37.A shop sells 500 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  38. 38.A water tank holds 1300 litres. 30% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹3760 to ₹5264. By what percent did it go up?
  40. 40.The price of a bicycle is ₹4100. It goes up by 10%. What is the new price (in ₹)?

Answer key

  1. 864
  2. 30
  3. 4704
  4. 50
  5. 5564
  6. 15
  7. 15
  8. 5
  9. 20
  10. 2856
  11. 5
  12. 50
  13. 532
  14. 10
  15. 1755
  16. 952
  17. 40
  18. 1596
  19. 2430
  20. 5
  21. 1630
  22. 5856
  23. 1260
  24. 3749
  25. 15
  26. 176
  27. 12.5
  28. 1764
  29. 72.5
  30. 18.75
  31. 2898
  32. 4560
  33. 15
  34. 36.25
  35. 3724
  36. 5497
  37. 525
  38. 910
  39. 40
  40. 4510

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