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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 686 · 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 price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  2. 2.The price of a school bag changes from ₹3340 to ₹2839. By what percent did it come down?
  3. 3.A shop sells 1020 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  4. 4.A water tank holds 60 litres. 40% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹1160 to ₹1624. By what percent did it go up?
  6. 6.A shop sells 80 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  7. 7.The price of a school bag changes from ₹4660 to ₹2330. By what percent did it come down?
  8. 8.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
  9. 9.A town has 1300 people. Its population grows by 10%. How many people live there now?
  10. 10.A water tank holds 3240 litres. 20% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹4120 to ₹6180. By what percent did it go up?
  12. 12.The price of a bicycle is ₹560. It goes up by 15%. What is the new price (in ₹)?
  13. 13.The price of a bicycle is ₹600. It goes up by 50%. What is the new price (in ₹)?
  14. 14.The price of a school bag changes from ₹2820 to ₹2256. By what percent did it come down?
  15. 15.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  16. 16.The price of a bicycle is ₹660. It goes up by 40%. What is the new price (in ₹)?
  17. 17.A town has 3340 people. Its population grows by 10%. How many people live there now?
  18. 18.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  19. 19.A water tank holds 520 litres. 5% of the water is used. How many litres are left?
  20. 20.A water tank holds 1360 litres. 30% of the water is used. How many litres are left?
  21. 21.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
  22. 22.The price of a bicycle is ₹1000. It goes up by 10%. What is the new price (in ₹)?
  23. 23.The price of a school bag changes from ₹3880 to ₹1940. By what percent did it come down?
  24. 24.A water tank holds 4600 litres. 5% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹4420 to ₹5083. By what percent did it go up?
  26. 26.The price of a school bag changes from ₹300 to ₹315. By what percent did it go up?
  27. 27.A water tank holds 3340 litres. 50% of the water is used. How many litres are left?
  28. 28.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  29. 29.A town has 3020 people. Its population grows by 40%. How many people live there now?
  30. 30.The price of a school bag changes from ₹880 to ₹1320. By what percent did it go up?
  31. 31.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
  32. 32.A shop sells 1980 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  33. 33.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  34. 34.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  35. 35.The price of a bicycle is ₹4260. It goes up by 20%. What is the new price (in ₹)?
  36. 36.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
  37. 37.A shop sells 4060 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  38. 38.A water tank holds 820 litres. 15% of the water is used. How many litres are left?
  39. 39.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
  40. 40.The price of a school bag changes from ₹120 to ₹72. By what percent did it come down?

Answer key

  1. 57.5
  2. 15
  3. 1122
  4. 36
  5. 40
  6. 84
  7. 50
  8. 125
  9. 1430
  10. 2592
  11. 50
  12. 644
  13. 900
  14. 20
  15. 26.5
  16. 924
  17. 3674
  18. 72.5
  19. 494
  20. 952
  21. 28.75
  22. 1100
  23. 50
  24. 4370
  25. 15
  26. 5
  27. 1670
  28. 20.75
  29. 4228
  30. 50
  31. 69
  32. 2970
  33. 52
  34. 19
  35. 5112
  36. 82
  37. 5684
  38. 697
  39. 18.75
  40. 40

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