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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 298 · 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.The price of a school bag changes from ₹2480 to ₹1860. By what percent did it come down?
  2. 2.A water tank holds 1640 litres. 30% of the water is used. How many litres are left?
  3. 3.The price of a bicycle is ₹2420. It goes up by 10%. What is the new price (in ₹)?
  4. 4.A water tank holds 3920 litres. 5% of the water is used. How many litres are left?
  5. 5.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  6. 6.A water tank holds 1320 litres. 15% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹220 to ₹132. By what percent did it come down?
  8. 8.A water tank holds 1260 litres. 25% of the water is used. How many litres are left?
  9. 9.The price of a school bag changes from ₹2020 to ₹1212. By what percent did it come down?
  10. 10.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  11. 11.A water tank holds 1520 litres. 50% of the water is used. How many litres are left?
  12. 12.The price of a bicycle is ₹2980. It goes up by 25%. What is the new price (in ₹)?
  13. 13.The price of a bicycle is ₹2440. It goes up by 5%. What is the new price (in ₹)?
  14. 14.The price of a school bag changes from ₹1020 to ₹1173. By what percent did it go up?
  15. 15.A town has 700 people. Its population grows by 5%. How many people live there now?
  16. 16.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
  17. 17.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  18. 18.The price of a school bag changes from ₹140 to ₹182. By what percent did it go up?
  19. 19.The price of a bicycle is ₹3520. It goes up by 25%. What is the new price (in ₹)?
  20. 20.A water tank holds 840 litres. 5% of the water is used. How many litres are left?
  21. 21.The price of a school bag changes from ₹4880 to ₹3416. By what percent did it come down?
  22. 22.The price of a bicycle is ₹4820. It goes up by 15%. What is the new price (in ₹)?
  23. 23.A town has 460 people. Its population grows by 50%. How many people live there now?
  24. 24.The price of a school bag changes from ₹1100 to ₹770. By what percent did it come down?
  25. 25.A water tank holds 1440 litres. 15% of the water is used. How many litres are left?
  26. 26.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  27. 27.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
  28. 28.A water tank holds 280 litres. 15% of the water is used. How many litres are left?
  29. 29.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  30. 30.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
  31. 31.A shop sells 3300 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  32. 32.A town has 4900 people. Its population grows by 50%. How many people live there now?
  33. 33.The price of a school bag changes from ₹3620 to ₹3982. By what percent did it go up?
  34. 34.A shop sells 2300 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  35. 35.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
  36. 36.A town has 260 people. Its population grows by 10%. How many people live there now?
  37. 37.The price of a school bag changes from ₹4920 to ₹5658. By what percent did it go up?
  38. 38.The price of a bicycle is ₹1800. It goes up by 25%. What is the new price (in ₹)?
  39. 39.A town has 3460 people. Its population grows by 50%. How many people live there now?
  40. 40.The price of a bicycle is ₹340. It goes up by 50%. What is the new price (in ₹)?

Answer key

  1. 25
  2. 1148
  3. 2662
  4. 3724
  5. 3.5
  6. 1122
  7. 40
  8. 945
  9. 40
  10. 28.75
  11. 760
  12. 3725
  13. 2562
  14. 15
  15. 735
  16. 68
  17. 47.5
  18. 30
  19. 4400
  20. 798
  21. 30
  22. 5543
  23. 690
  24. 30
  25. 1224
  26. 23.5
  27. 10.5
  28. 238
  29. 32.5
  30. 32
  31. 4290
  32. 7350
  33. 10
  34. 2645
  35. 58
  36. 286
  37. 15
  38. 2250
  39. 5190
  40. 510

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