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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 95 · 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 ₹3720 to ₹2232. By what percent did it come down?
  2. 2.The price of a bicycle is ₹4480. It goes up by 5%. What is the new price (in ₹)?
  3. 3.The price of a school bag changes from ₹1620 to ₹2268. By what percent did it go up?
  4. 4.The price of a school bag changes from ₹1620 to ₹1782. By what percent did it go up?
  5. 5.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  6. 6.A water tank holds 1940 litres. 20% of the water is used. How many litres are left?
  7. 7.A water tank holds 2740 litres. 10% of the water is used. How many litres are left?
  8. 8.A water tank holds 1220 litres. 40% of the water is used. How many litres are left?
  9. 9.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  10. 10.A water tank holds 2860 litres. 15% of the water is used. How many litres are left?
  11. 11.A water tank holds 1560 litres. 30% of the water is used. How many litres are left?
  12. 12.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  13. 13.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  14. 14.The price of a bicycle is ₹3220. It goes up by 5%. What is the new price (in ₹)?
  15. 15.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  16. 16.A water tank holds 3480 litres. 50% of the water is used. How many litres are left?
  17. 17.A shop sells 4980 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  18. 18.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  19. 19.The price of a school bag changes from ₹820 to ₹779. By what percent did it come down?
  20. 20.The price of a bicycle is ₹3420. It goes up by 10%. What is the new price (in ₹)?
  21. 21.The price of a school bag changes from ₹4440 to ₹4884. By what percent did it go up?
  22. 22.A town has 1200 people. Its population grows by 25%. How many people live there now?
  23. 23.A water tank holds 3900 litres. 25% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹2440 to ₹3050. By what percent did it go up?
  25. 25.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  26. 26.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  27. 27.A price comes down by 50% and then comes down by 15% more. By what percent has it come down in all? =
  28. 28.A water tank holds 4880 litres. 5% of the water is used. How many litres are left?
  29. 29.A water tank holds 4580 litres. 30% of the water is used. How many litres are left?
  30. 30.A water tank holds 4500 litres. 20% of the water is used. How many litres are left?
  31. 31.A water tank holds 3500 litres. 15% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹4480 to ₹5376. By what percent did it go up?
  33. 33.The price of a bicycle is ₹4680. It goes up by 10%. What is the new price (in ₹)?
  34. 34.A shop sells 3620 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  35. 35.The price of a bicycle is ₹500. It goes up by 5%. What is the new price (in ₹)?
  36. 36.A water tank holds 3920 litres. 10% of the water is used. How many litres are left?
  37. 37.A town has 3240 people. Its population grows by 30%. How many people live there now?
  38. 38.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
  39. 39.The price of a school bag changes from ₹1480 to ₹1924. By what percent did it go up?
  40. 40.The price of a school bag changes from ₹880 to ₹1144. By what percent did it go up?

Answer key

  1. 40
  2. 4704
  3. 40
  4. 10
  5. 15.5
  6. 1552
  7. 2466
  8. 732
  9. 43
  10. 2431
  11. 1092
  12. 56
  13. 14.5
  14. 3381
  15. 31.25
  16. 1740
  17. 6474
  18. 80
  19. 5
  20. 3762
  21. 10
  22. 1500
  23. 2925
  24. 25
  25. 23.5
  26. 32.5
  27. 57.5
  28. 4636
  29. 3206
  30. 3600
  31. 2975
  32. 20
  33. 5148
  34. 3801
  35. 525
  36. 3528
  37. 4212
  38. 26
  39. 30
  40. 30

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