← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 717 · 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 ₹1300 to ₹1105. By what percent did it come down?
  2. 2.A water tank holds 1800 litres. 10% of the water is used. How many litres are left?
  3. 3.A water tank holds 900 litres. 5% of the water is used. How many litres are left?
  4. 4.A water tank holds 3400 litres. 10% of the water is used. How many litres are left?
  5. 5.A water tank holds 540 litres. 40% of the water is used. How many litres are left?
  6. 6.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  7. 7.The price of a school bag changes from ₹2200 to ₹3080. By what percent did it go up?
  8. 8.A water tank holds 4960 litres. 40% of the water is used. How many litres are left?
  9. 9.A water tank holds 1580 litres. 25% of the water is used. How many litres are left?
  10. 10.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
  11. 11.The price of a bicycle is ₹1080. It goes up by 30%. What is the new price (in ₹)?
  12. 12.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  13. 13.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  14. 14.The price of a school bag changes from ₹1520 to ₹1140. By what percent did it come down?
  15. 15.A shop sells 460 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  16. 16.The price of a school bag changes from ₹1240 to ₹1550. By what percent did it go up?
  17. 17.A town has 3200 people. Its population grows by 15%. How many people live there now?
  18. 18.A town has 960 people. Its population grows by 10%. How many people live there now?
  19. 19.The price of a bicycle is ₹2560. It goes up by 15%. What is the new price (in ₹)?
  20. 20.A water tank holds 4720 litres. 10% of the water is used. How many litres are left?
  21. 21.The price of a school bag changes from ₹4660 to ₹5592. By what percent did it go up?
  22. 22.A shop sells 4440 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  23. 23.A water tank holds 4260 litres. 25% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹1360 to ₹1428. By what percent did it go up?
  25. 25.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
  26. 26.A water tank holds 720 litres. 30% of the water is used. How many litres are left?
  27. 27.A town has 1260 people. Its population grows by 5%. How many people live there now?
  28. 28.The price of a school bag changes from ₹2620 to ₹2751. By what percent did it go up?
  29. 29.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  30. 30.The price of a bicycle is ₹600. It goes up by 20%. What is the new price (in ₹)?
  31. 31.A water tank holds 4460 litres. 40% of the water is used. How many litres are left?
  32. 32.A town has 4360 people. Its population grows by 5%. How many people live there now?
  33. 33.A water tank holds 2940 litres. 20% of the water is used. How many litres are left?
  34. 34.A town has 4860 people. Its population grows by 10%. How many people live there now?
  35. 35.A price comes down by 50% and then comes down by 15% more. By what percent has it come down in all? =
  36. 36.The price of a school bag changes from ₹900 to ₹945. By what percent did it go up?
  37. 37.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  38. 38.A shop sells 1960 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  39. 39.The price of a bicycle is ₹4360. It goes up by 50%. What is the new price (in ₹)?
  40. 40.A water tank holds 4460 litres. 25% of the water is used. How many litres are left?

Answer key

  1. 15
  2. 1620
  3. 855
  4. 3060
  5. 324
  6. 65
  7. 40
  8. 2976
  9. 1185
  10. 49
  11. 1404
  12. 3.5
  13. 32
  14. 25
  15. 575
  16. 25
  17. 3680
  18. 1056
  19. 2944
  20. 4248
  21. 20
  22. 5328
  23. 3195
  24. 5
  25. 24
  26. 504
  27. 1323
  28. 5
  29. 96
  30. 720
  31. 2676
  32. 4578
  33. 2352
  34. 5346
  35. 57.5
  36. 5
  37. 52
  38. 2940
  39. 6540
  40. 3345

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