← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 864 · 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 ₹3100 to ₹4650. By what percent did it go up?
  2. 2.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  3. 3.The price of a bicycle is ₹3940. It goes up by 50%. What is the new price (in ₹)?
  4. 4.A water tank holds 2640 litres. 25% of the water is used. How many litres are left?
  5. 5.A water tank holds 3680 litres. 5% of the water is used. How many litres are left?
  6. 6.The price of a bicycle is ₹1460. It goes up by 20%. What is the new price (in ₹)?
  7. 7.A shop sells 420 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  8. 8.A water tank holds 1080 litres. 20% of the water is used. How many litres are left?
  9. 9.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  10. 10.The price of a school bag changes from ₹2840 to ₹3692. By what percent did it go up?
  11. 11.The price of a school bag changes from ₹4260 to ₹3834. By what percent did it come down?
  12. 12.The price of a school bag changes from ₹3740 to ₹2992. By what percent did it come down?
  13. 13.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
  14. 14.The price of a bicycle is ₹4560. It goes up by 10%. What is the new price (in ₹)?
  15. 15.The price of a school bag changes from ₹4800 to ₹4560. By what percent did it come down?
  16. 16.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
  17. 17.A price goes up by 50% and then comes down by 30%. By what percent has it gone up in all? =
  18. 18.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  19. 19.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
  20. 20.A water tank holds 100 litres. 30% of the water is used. How many litres are left?
  21. 21.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  22. 22.A water tank holds 280 litres. 40% of the water is used. How many litres are left?
  23. 23.A water tank holds 2960 litres. 50% of the water is used. How many litres are left?
  24. 24.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  25. 25.A shop sells 1860 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  26. 26.The price of a school bag changes from ₹4580 to ₹5496. By what percent did it go up?
  27. 27.A town has 1560 people. Its population grows by 10%. How many people live there now?
  28. 28.The price of a school bag changes from ₹4820 to ₹6748. By what percent did it go up?
  29. 29.The price of a school bag changes from ₹1220 to ₹610. By what percent did it come down?
  30. 30.The price of a bicycle is ₹3300. It goes up by 5%. What is the new price (in ₹)?
  31. 31.A water tank holds 1380 litres. 30% of the water is used. How many litres are left?
  32. 32.A town has 2480 people. Its population grows by 10%. How many people live there now?
  33. 33.A water tank holds 3060 litres. 5% of the water is used. How many litres are left?
  34. 34.A water tank holds 1020 litres. 20% of the water is used. How many litres are left?
  35. 35.A water tank holds 3740 litres. 10% of the water is used. How many litres are left?
  36. 36.A shop sells 2320 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  37. 37.A water tank holds 3480 litres. 15% of the water is used. How many litres are left?
  38. 38.The price of a bicycle is ₹1600. It goes up by 20%. What is the new price (in ₹)?
  39. 39.The price of a bicycle is ₹2260. It goes up by 30%. What is the new price (in ₹)?
  40. 40.A water tank holds 1600 litres. 40% of the water is used. How many litres are left?

Answer key

  1. 50
  2. 32.5
  3. 5910
  4. 1980
  5. 3496
  6. 1752
  7. 588
  8. 864
  9. 31.25
  10. 30
  11. 10
  12. 20
  13. 75
  14. 5016
  15. 5
  16. 32
  17. 5
  18. 57.5
  19. 44
  20. 70
  21. 82
  22. 168
  23. 1480
  24. 26
  25. 2046
  26. 20
  27. 1716
  28. 40
  29. 50
  30. 3465
  31. 966
  32. 2728
  33. 2907
  34. 816
  35. 3366
  36. 3016
  37. 2958
  38. 1920
  39. 2938
  40. 960

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