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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 60 · 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 water tank holds 2220 litres. 30% of the water is used. How many litres are left?
  2. 2.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
  3. 3.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  4. 4.The price of a school bag changes from ₹2620 to ₹3144. By what percent did it go up?
  5. 5.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  6. 6.A water tank holds 2940 litres. 5% of the water is used. How many litres are left?
  7. 7.A water tank holds 3860 litres. 30% of the water is used. How many litres are left?
  8. 8.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  9. 9.A water tank holds 2140 litres. 20% of the water is used. How many litres are left?
  10. 10.A price comes down by 50% and then comes down by 15% more. By what percent has it come down in all? =
  11. 11.The price of a school bag changes from ₹4560 to ₹2280. By what percent did it come down?
  12. 12.The price of a bicycle is ₹680. It goes up by 10%. What is the new price (in ₹)?
  13. 13.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  14. 14.The price of a bicycle is ₹1060. It goes up by 15%. What is the new price (in ₹)?
  15. 15.The price of a school bag changes from ₹1240 to ₹1736. By what percent did it go up?
  16. 16.A water tank holds 1380 litres. 25% of the water is used. How many litres are left?
  17. 17.A water tank holds 1880 litres. 25% of the water is used. How many litres are left?
  18. 18.A town has 2700 people. Its population grows by 10%. How many people live there now?
  19. 19.A water tank holds 2160 litres. 40% of the water is used. How many litres are left?
  20. 20.A water tank holds 1460 litres. 40% of the water is used. How many litres are left?
  21. 21.A water tank holds 2560 litres. 40% of the water is used. How many litres are left?
  22. 22.A town has 4000 people. Its population grows by 15%. How many people live there now?
  23. 23.The price of a bicycle is ₹500. It goes up by 25%. What is the new price (in ₹)?
  24. 24.The price of a school bag changes from ₹2780 to ₹3058. By what percent did it go up?
  25. 25.The price of a bicycle is ₹3380. It goes up by 10%. What is the new price (in ₹)?
  26. 26.The price of a school bag changes from ₹3020 to ₹3322. By what percent did it go up?
  27. 27.The price of a bicycle is ₹200. It goes up by 50%. What is the new price (in ₹)?
  28. 28.A shop sells 3120 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  29. 29.The price of a school bag changes from ₹1900 to ₹2850. By what percent did it go up?
  30. 30.A shop sells 4580 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  31. 31.A town has 3640 people. Its population grows by 30%. How many people live there now?
  32. 32.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  33. 33.A shop sells 2480 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  34. 34.A water tank holds 940 litres. 50% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹1060 to ₹1272. By what percent did it go up?
  36. 36.A town has 4440 people. Its population grows by 25%. How many people live there now?
  37. 37.A water tank holds 2060 litres. 50% of the water is used. How many litres are left?
  38. 38.A water tank holds 3340 litres. 30% of the water is used. How many litres are left?
  39. 39.A water tank holds 3440 litres. 25% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹4420 to ₹3094. By what percent did it come down?

Answer key

  1. 1554
  2. 82
  3. 57.5
  4. 20
  5. 20.75
  6. 2793
  7. 2702
  8. 58
  9. 1712
  10. 57.5
  11. 50
  12. 748
  13. 52
  14. 1219
  15. 40
  16. 1035
  17. 1410
  18. 2970
  19. 1296
  20. 876
  21. 1536
  22. 4600
  23. 625
  24. 10
  25. 3718
  26. 10
  27. 300
  28. 3432
  29. 50
  30. 5954
  31. 4732
  32. 23.5
  33. 2852
  34. 470
  35. 20
  36. 5550
  37. 1030
  38. 2338
  39. 2580
  40. 30

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