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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 341 · 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 ₹2100. It goes up by 30%. What is the new price (in ₹)?
  2. 2.The price of a school bag changes from ₹1980 to ₹1782. By what percent did it come down?
  3. 3.The price of a school bag changes from ₹1320 to ₹1254. By what percent did it come down?
  4. 4.A shop sells 1020 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  5. 5.A water tank holds 2120 litres. 20% of the water is used. How many litres are left?
  6. 6.A water tank holds 4700 litres. 5% of the water is used. How many litres are left?
  7. 7.A town has 3460 people. Its population grows by 5%. How many people live there now?
  8. 8.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  9. 9.A water tank holds 1120 litres. 20% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹3320 to ₹2988. By what percent did it come down?
  11. 11.A water tank holds 4160 litres. 20% of the water is used. How many litres are left?
  12. 12.The price of a bicycle is ₹2400. It goes up by 25%. What is the new price (in ₹)?
  13. 13.A water tank holds 1340 litres. 20% of the water is used. How many litres are left?
  14. 14.A water tank holds 4240 litres. 50% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹560 to ₹532. By what percent did it come down?
  16. 16.A shop sells 700 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  17. 17.The price of a bicycle is ₹2020. It goes up by 25%. What is the new price (in ₹)?
  18. 18.The price of a school bag changes from ₹2840 to ₹3550. By what percent did it go up?
  19. 19.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
  20. 20.The price of a bicycle is ₹2820. It goes up by 30%. What is the new price (in ₹)?
  21. 21.The price of a school bag changes from ₹4280 to ₹3638. By what percent did it come down?
  22. 22.The price of a bicycle is ₹620. It goes up by 25%. What is the new price (in ₹)?
  23. 23.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  24. 24.A town has 4620 people. Its population grows by 5%. How many people live there now?
  25. 25.The price of a bicycle is ₹3340. It goes up by 30%. What is the new price (in ₹)?
  26. 26.A water tank holds 4920 litres. 15% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹3480 to ₹4002. By what percent did it go up?
  28. 28.A shop sells 180 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  29. 29.A water tank holds 3380 litres. 15% of the water is used. How many litres are left?
  30. 30.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
  31. 31.The price of a bicycle is ₹1420. It goes up by 25%. What is the new price (in ₹)?
  32. 32.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  33. 33.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹1260 to ₹1134. By what percent did it come down?
  35. 35.The price of a bicycle is ₹5000. It goes up by 20%. What is the new price (in ₹)?
  36. 36.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  37. 37.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
  38. 38.A water tank holds 2260 litres. 25% 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.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =

Answer key

  1. 2730
  2. 10
  3. 5
  4. 1530
  5. 1696
  6. 4465
  7. 3633
  8. 12.5
  9. 896
  10. 10
  11. 3328
  12. 3000
  13. 1072
  14. 2120
  15. 5
  16. 805
  17. 2525
  18. 25
  19. 68
  20. 3666
  21. 15
  22. 775
  23. 23.5
  24. 4851
  25. 4342
  26. 4182
  27. 15
  28. 189
  29. 2873
  30. 49
  31. 1775
  32. 49.5
  33. 72.5
  34. 10
  35. 6000
  36. 43
  37. 40.5
  38. 1695
  39. 32
  40. 55

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