← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 622 · 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 ₹1820 to ₹1638. By what percent did it come down?
  2. 2.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  3. 3.The price of a bicycle is ₹560. It goes up by 25%. What is the new price (in ₹)?
  4. 4.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  5. 5.A town has 3440 people. Its population grows by 30%. How many people live there now?
  6. 6.The price of a bicycle is ₹4000. It goes up by 30%. What is the new price (in ₹)?
  7. 7.A water tank holds 4000 litres. 15% of the water is used. How many litres are left?
  8. 8.A water tank holds 3480 litres. 25% of the water is used. How many litres are left?
  9. 9.The price of a bicycle is ₹380. It goes up by 5%. What is the new price (in ₹)?
  10. 10.The price of a bicycle is ₹940. It goes up by 15%. What is the new price (in ₹)?
  11. 11.The price of a bicycle is ₹880. It goes up by 10%. What is the new price (in ₹)?
  12. 12.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  13. 13.The price of a school bag changes from ₹2100 to ₹1680. By what percent did it come down?
  14. 14.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  15. 15.A water tank holds 820 litres. 20% of the water is used. How many litres are left?
  16. 16.A shop sells 600 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  17. 17.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  18. 18.A water tank holds 1080 litres. 5% of the water is used. How many litres are left?
  19. 19.A shop sells 2300 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  20. 20.A water tank holds 1000 litres. 5% of the water is used. How many litres are left?
  21. 21.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  22. 22.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  23. 23.The price of a school bag changes from ₹3300 to ₹2970. By what percent did it come down?
  24. 24.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  25. 25.A water tank holds 1600 litres. 15% of the water is used. How many litres are left?
  26. 26.The price of a bicycle is ₹1140. It goes up by 15%. What is the new price (in ₹)?
  27. 27.A water tank holds 980 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 5% more. By what percent has it gone up in all? =
  29. 29.A water tank holds 940 litres. 5% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹1760 to ₹2200. By what percent did it go up?
  31. 31.The price of a bicycle is ₹800. It goes up by 5%. What is the new price (in ₹)?
  32. 32.A water tank holds 5000 litres. 50% of the water is used. How many litres are left?
  33. 33.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
  34. 34.A shop sells 1180 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  35. 35.The price of a school bag changes from ₹4240 to ₹5088. By what percent did it go up?
  36. 36.A water tank holds 1200 litres. 30% of the water is used. How many litres are left?
  37. 37.The price of a bicycle is ₹460. It goes up by 50%. What is the new price (in ₹)?
  38. 38.A water tank holds 480 litres. 15% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹3180 to ₹3498. By what percent did it go up?
  40. 40.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =

Answer key

  1. 10
  2. 52.5
  3. 700
  4. 52.5
  5. 4472
  6. 5200
  7. 3400
  8. 2610
  9. 399
  10. 1081
  11. 968
  12. 87.5
  13. 20
  14. 19.25
  15. 656
  16. 900
  17. 80
  18. 1026
  19. 2990
  20. 950
  21. 72.5
  22. 60
  23. 10
  24. 65
  25. 1360
  26. 1311
  27. 490
  28. 10.25
  29. 893
  30. 25
  31. 840
  32. 2500
  33. 110
  34. 1534
  35. 20
  36. 840
  37. 690
  38. 408
  39. 10
  40. 50

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude