← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 560 · 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 ₹4520 to ₹5876. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹4480 to ₹4704. By what percent did it go up?
  3. 3.The price of a bicycle is ₹1320. It goes up by 5%. What is the new price (in ₹)?
  4. 4.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  5. 5.A town has 3820 people. Its population grows by 15%. How many people live there now?
  6. 6.The price of a bicycle is ₹2060. It goes up by 50%. What is the new price (in ₹)?
  7. 7.The price of a school bag changes from ₹2160 to ₹1836. By what percent did it come down?
  8. 8.The price of a school bag changes from ₹2100 to ₹1050. By what percent did it come down?
  9. 9.The price of a school bag changes from ₹1520 to ₹1748. By what percent did it go up?
  10. 10.The price of a school bag changes from ₹1740 to ₹2610. By what percent did it go up?
  11. 11.A town has 2980 people. Its population grows by 10%. How many people live there now?
  12. 12.The price of a school bag changes from ₹1100 to ₹1540. By what percent did it go up?
  13. 13.The price of a school bag changes from ₹200 to ₹220. By what percent did it go up?
  14. 14.The price of a school bag changes from ₹580 to ₹754. By what percent did it go up?
  15. 15.A town has 4980 people. Its population grows by 10%. How many people live there now?
  16. 16.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  17. 17.A shop sells 2820 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  18. 18.The price of a school bag changes from ₹4820 to ₹5302. By what percent did it go up?
  19. 19.The price of a school bag changes from ₹2600 to ₹3250. By what percent did it go up?
  20. 20.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  21. 21.The price of a school bag changes from ₹800 to ₹600. By what percent did it come down?
  22. 22.The price of a bicycle is ₹4640. It goes up by 10%. What is the new price (in ₹)?
  23. 23.A shop sells 1560 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  24. 24.A water tank holds 360 litres. 20% of the water is used. How many litres are left?
  25. 25.A water tank holds 1240 litres. 10% of the water is used. How many litres are left?
  26. 26.The price of a school bag changes from ₹780 to ₹975. By what percent did it go up?
  27. 27.A shop sells 3680 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  28. 28.The price of a school bag changes from ₹1540 to ₹1155. By what percent did it come down?
  29. 29.A water tank holds 60 litres. 5% of the water is used. How many litres are left?
  30. 30.A water tank holds 320 litres. 20% of the water is used. How many litres are left?
  31. 31.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  32. 32.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  33. 33.A water tank holds 4480 litres. 20% of the water is used. How many litres are left?
  34. 34.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  35. 35.The price of a school bag changes from ₹1440 to ₹1296. By what percent did it come down?
  36. 36.A water tank holds 1340 litres. 15% of the water is used. How many litres are left?
  37. 37.The price of a bicycle is ₹3420. It goes up by 5%. What is the new price (in ₹)?
  38. 38.A shop sells 2380 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  39. 39.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  40. 40.The price of a school bag changes from ₹1300 to ₹1430. By what percent did it go up?

Answer key

  1. 30
  2. 5
  3. 1386
  4. 9.75
  5. 4393
  6. 3090
  7. 15
  8. 50
  9. 15
  10. 50
  11. 3278
  12. 40
  13. 10
  14. 30
  15. 5478
  16. 2
  17. 3243
  18. 10
  19. 25
  20. 3.5
  21. 25
  22. 5104
  23. 1950
  24. 288
  25. 1116
  26. 25
  27. 4232
  28. 25
  29. 57
  30. 256
  31. 4.5
  32. 23.5
  33. 3584
  34. 56.25
  35. 10
  36. 1139
  37. 3591
  38. 3570
  39. 37
  40. 10

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