← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 228 · 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 ₹560 to ₹616. By what percent did it go up?
  2. 2.A shop sells 240 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  3. 3.A water tank holds 3100 litres. 10% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹3640 to ₹3458. By what percent did it come down?
  5. 5.A water tank holds 780 litres. 10% of the water is used. How many litres are left?
  6. 6.A price comes down by 20% and then comes down by 15% more. By what percent has it come down in all? =
  7. 7.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
  8. 8.A water tank holds 4700 litres. 50% of the water is used. How many litres are left?
  9. 9.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  10. 10.A water tank holds 2940 litres. 40% of the water is used. How many litres are left?
  11. 11.A water tank holds 1300 litres. 50% of the water is used. How many litres are left?
  12. 12.A town has 1440 people. Its population grows by 50%. How many people live there now?
  13. 13.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  14. 14.A water tank holds 1840 litres. 30% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹520 to ₹442. By what percent did it come down?
  16. 16.A town has 2560 people. Its population grows by 30%. How many people live there now?
  17. 17.The price of a school bag changes from ₹2960 to ₹2664. By what percent did it come down?
  18. 18.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  19. 19.The price of a school bag changes from ₹1980 to ₹990. By what percent did it come down?
  20. 20.A shop sells 1220 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  21. 21.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  22. 22.The price of a bicycle is ₹940. It goes up by 30%. What is the new price (in ₹)?
  23. 23.A water tank holds 460 litres. 25% of the water is used. How many litres are left?
  24. 24.A water tank holds 2780 litres. 30% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹1200. It goes up by 20%. What is the new price (in ₹)?
  26. 26.The price of a school bag changes from ₹3820 to ₹4011. By what percent did it go up?
  27. 27.The price of a school bag changes from ₹1100 to ₹1320. By what percent did it go up?
  28. 28.The price of a school bag changes from ₹1060 to ₹954. By what percent did it come down?
  29. 29.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  30. 30.The price of a school bag changes from ₹2700 to ₹2430. By what percent did it come down?
  31. 31.The price of a school bag changes from ₹1360 to ₹1156. By what percent did it come down?
  32. 32.The price of a school bag changes from ₹860 to ₹989. By what percent did it go up?
  33. 33.A water tank holds 760 litres. 25% of the water is used. How many litres are left?
  34. 34.A town has 2540 people. Its population grows by 40%. How many people live there now?
  35. 35.The price of a school bag changes from ₹3580 to ₹5012. By what percent did it go up?
  36. 36.The price of a school bag changes from ₹3420 to ₹3762. By what percent did it go up?
  37. 37.The price of a bicycle is ₹2040. It goes up by 5%. What is the new price (in ₹)?
  38. 38.The price of a school bag changes from ₹1200 to ₹1680. By what percent did it go up?
  39. 39.A water tank holds 3140 litres. 30% of the water is used. How many litres are left?
  40. 40.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =

Answer key

  1. 10
  2. 252
  3. 2790
  4. 5
  5. 702
  6. 32
  7. 82
  8. 2350
  9. 27.75
  10. 1764
  11. 650
  12. 2160
  13. 32.5
  14. 1288
  15. 15
  16. 3328
  17. 10
  18. 33.5
  19. 50
  20. 1403
  21. 75
  22. 1222
  23. 345
  24. 1946
  25. 1440
  26. 5
  27. 20
  28. 10
  29. 47
  30. 10
  31. 15
  32. 15
  33. 570
  34. 3556
  35. 40
  36. 10
  37. 2142
  38. 40
  39. 2198
  40. 56.25

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