← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 454 · 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 ₹3360 to ₹2520. By what percent did it come down?
  2. 2.A water tank holds 160 litres. 25% of the water is used. How many litres are left?
  3. 3.A town has 2960 people. Its population grows by 5%. How many people live there now?
  4. 4.A shop sells 1400 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  5. 5.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  6. 6.A shop sells 1100 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  7. 7.A water tank holds 640 litres. 15% of the water is used. How many litres are left?
  8. 8.A water tank holds 2800 litres. 5% of the water is used. How many litres are left?
  9. 9.The price of a school bag changes from ₹800 to ₹920. By what percent did it go up?
  10. 10.The price of a school bag changes from ₹1100 to ₹1155. By what percent did it go up?
  11. 11.The price of a school bag changes from ₹2960 to ₹3700. By what percent did it go up?
  12. 12.The price of a school bag changes from ₹3840 to ₹2688. By what percent did it come down?
  13. 13.A water tank holds 4060 litres. 5% of the water is used. How many litres are left?
  14. 14.A water tank holds 3740 litres. 15% of the water is used. How many litres are left?
  15. 15.The price of a bicycle is ₹4040. It goes up by 25%. What is the new price (in ₹)?
  16. 16.A water tank holds 900 litres. 5% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹3760 to ₹2632. By what percent did it come down?
  18. 18.A town has 1800 people. Its population grows by 5%. How many people live there now?
  19. 19.The price of a school bag changes from ₹400 to ₹460. By what percent did it go up?
  20. 20.The price of a school bag changes from ₹3980 to ₹3184. By what percent did it come down?
  21. 21.The price of a school bag changes from ₹4140 to ₹5175. By what percent did it go up?
  22. 22.The price of a school bag changes from ₹2840 to ₹3976. By what percent did it go up?
  23. 23.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  24. 24.A town has 1040 people. Its population grows by 15%. How many people live there now?
  25. 25.A water tank holds 1660 litres. 30% of the water is used. How many litres are left?
  26. 26.A water tank holds 4020 litres. 5% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹2360 to ₹2596. By what percent did it go up?
  28. 28.A water tank holds 3260 litres. 25% of the water is used. How many litres are left?
  29. 29.A water tank holds 1800 litres. 30% of the water is used. How many litres are left?
  30. 30.The price of a bicycle is ₹3040. It goes up by 40%. What is the new price (in ₹)?
  31. 31.A water tank holds 1020 litres. 40% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹2380 to ₹1428. By what percent did it come down?
  33. 33.A water tank holds 2120 litres. 10% of the water is used. How many litres are left?
  34. 34.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  35. 35.A water tank holds 1500 litres. 40% of the water is used. How many litres are left?
  36. 36.A water tank holds 460 litres. 20% of the water is used. How many litres are left?
  37. 37.A shop sells 4760 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  38. 38.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  39. 39.The price of a school bag changes from ₹1740 to ₹1653. By what percent did it come down?
  40. 40.The price of a school bag changes from ₹2480 to ₹3720. By what percent did it go up?

Answer key

  1. 25
  2. 120
  3. 3108
  4. 1750
  5. 47.5
  6. 1320
  7. 544
  8. 2660
  9. 15
  10. 5
  11. 25
  12. 30
  13. 3857
  14. 3179
  15. 5050
  16. 855
  17. 30
  18. 1890
  19. 15
  20. 20
  21. 25
  22. 40
  23. 14
  24. 1196
  25. 1162
  26. 3819
  27. 10
  28. 2445
  29. 1260
  30. 4256
  31. 612
  32. 40
  33. 1908
  34. 9.75
  35. 900
  36. 368
  37. 6664
  38. 57.5
  39. 5
  40. 50

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