← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 778 · 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 ₹460 to ₹644. By what percent did it go up?
  2. 2.The price of a bicycle is ₹1400. It goes up by 15%. What is the new price (in ₹)?
  3. 3.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
  4. 4.The price of a school bag changes from ₹2540 to ₹2667. By what percent did it go up?
  5. 5.A town has 940 people. Its population grows by 40%. How many people live there now?
  6. 6.A water tank holds 3620 litres. 40% of the water is used. How many litres are left?
  7. 7.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  8. 8.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
  9. 9.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  10. 10.A water tank holds 480 litres. 5% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹4540 to ₹5675. By what percent did it go up?
  12. 12.A water tank holds 60 litres. 15% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹1820 to ₹1638. By what percent did it come down?
  14. 14.The price of a school bag changes from ₹2500 to ₹2375. By what percent did it come down?
  15. 15.The price of a bicycle is ₹2620. It goes up by 10%. What is the new price (in ₹)?
  16. 16.A town has 2480 people. Its population grows by 5%. How many people live there now?
  17. 17.The price of a school bag changes from ₹2080 to ₹2600. By what percent did it go up?
  18. 18.A water tank holds 4280 litres. 40% of the water is used. How many litres are left?
  19. 19.A water tank holds 2020 litres. 50% of the water is used. How many litres are left?
  20. 20.A water tank holds 920 litres. 5% of the water is used. How many litres are left?
  21. 21.The price of a school bag changes from ₹380 to ₹285. By what percent did it come down?
  22. 22.A town has 1380 people. Its population grows by 15%. How many people live there now?
  23. 23.The price of a school bag changes from ₹2740 to ₹3836. By what percent did it go up?
  24. 24.The price of a school bag changes from ₹760 to ₹570. By what percent did it come down?
  25. 25.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  26. 26.A town has 3840 people. Its population grows by 5%. How many people live there now?
  27. 27.A shop sells 4040 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  28. 28.The price of a school bag changes from ₹420 to ₹630. By what percent did it go up?
  29. 29.The price of a bicycle is ₹2360. It goes up by 20%. What is the new price (in ₹)?
  30. 30.A water tank holds 4200 litres. 15% of the water is used. How many litres are left?
  31. 31.The price of a school bag changes from ₹1260 to ₹1575. By what percent did it go up?
  32. 32.The price of a school bag changes from ₹2760 to ₹2898. By what percent did it go up?
  33. 33.A water tank holds 2700 litres. 30% of the water is used. How many litres are left?
  34. 34.A water tank holds 420 litres. 40% of the water is used. How many litres are left?
  35. 35.A water tank holds 720 litres. 40% of the water is used. How many litres are left?
  36. 36.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  37. 37.The price of a school bag changes from ₹4800 to ₹6000. By what percent did it go up?
  38. 38.A water tank holds 1700 litres. 30% of the water is used. How many litres are left?
  39. 39.A water tank holds 4260 litres. 50% of the water is used. How many litres are left?
  40. 40.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =

Answer key

  1. 40
  2. 1610
  3. 49
  4. 5
  5. 1316
  6. 2172
  7. 43
  8. 68
  9. 32.25
  10. 456
  11. 25
  12. 51
  13. 10
  14. 5
  15. 2882
  16. 2604
  17. 25
  18. 2568
  19. 1010
  20. 874
  21. 25
  22. 1587
  23. 40
  24. 25
  25. 87.5
  26. 4032
  27. 5252
  28. 50
  29. 2832
  30. 3570
  31. 25
  32. 5
  33. 1890
  34. 252
  35. 432
  36. 55
  37. 25
  38. 1190
  39. 2130
  40. 62.5

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