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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 357 · 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 bicycle is ₹3240. It goes up by 15%. What is the new price (in ₹)?
  2. 2.A town has 3720 people. Its population grows by 20%. How many people live there now?
  3. 3.The price of a school bag changes from ₹1800 to ₹1440. By what percent did it come down?
  4. 4.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  5. 5.A water tank holds 4100 litres. 30% of the water is used. How many litres are left?
  6. 6.A town has 2480 people. Its population grows by 10%. How many people live there now?
  7. 7.A water tank holds 2280 litres. 20% of the water is used. How many litres are left?
  8. 8.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  9. 9.A shop sells 4100 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  10. 10.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  11. 11.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  12. 12.The price of a school bag changes from ₹3740 to ₹3553. By what percent did it come down?
  13. 13.A water tank holds 1520 litres. 50% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹740 to ₹555. By what percent did it come down?
  15. 15.A water tank holds 1900 litres. 25% of the water is used. How many litres are left?
  16. 16.The price of a school bag changes from ₹1760 to ₹2288. By what percent did it go up?
  17. 17.The price of a school bag changes from ₹2840 to ₹1420. By what percent did it come down?
  18. 18.A shop sells 2980 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  19. 19.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
  20. 20.The price of a school bag changes from ₹1700 to ₹2380. By what percent did it go up?
  21. 21.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  22. 22.A shop sells 1900 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  23. 23.The price of a bicycle is ₹840. It goes up by 20%. What is the new price (in ₹)?
  24. 24.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  25. 25.A water tank holds 1620 litres. 25% of the water is used. How many litres are left?
  26. 26.A shop sells 1980 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  27. 27.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  28. 28.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  29. 29.The price of a bicycle is ₹960. It goes up by 25%. What is the new price (in ₹)?
  30. 30.A water tank holds 4140 litres. 5% of the water is used. How many litres are left?
  31. 31.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  32. 32.The price of a bicycle is ₹160. It goes up by 10%. What is the new price (in ₹)?
  33. 33.The price of a school bag changes from ₹2420 to ₹3388. By what percent did it go up?
  34. 34.A water tank holds 4120 litres. 40% of the water is used. How many litres are left?
  35. 35.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
  36. 36.A water tank holds 660 litres. 10% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹60 to ₹42. By what percent did it come down?
  38. 38.A water tank holds 2440 litres. 5% of the water is used. How many litres are left?
  39. 39.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  40. 40.The price of a school bag changes from ₹5000 to ₹7500. By what percent did it go up?

Answer key

  1. 3726
  2. 4464
  3. 20
  4. 40.5
  5. 2870
  6. 2728
  7. 1824
  8. 32
  9. 4920
  10. 43
  11. 52.5
  12. 5
  13. 760
  14. 25
  15. 1425
  16. 30
  17. 50
  18. 4470
  19. 69
  20. 40
  21. 19.25
  22. 2090
  23. 1008
  24. 110
  25. 1215
  26. 2178
  27. 47.5
  28. 62.5
  29. 1200
  30. 3933
  31. 80
  32. 176
  33. 40
  34. 2472
  35. 110
  36. 594
  37. 30
  38. 2318
  39. 32
  40. 50

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