← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 281 · 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 ₹260 to ₹273. By what percent did it go up?
  2. 2.A shop sells 2320 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  3. 3.The price of a school bag changes from ₹480 to ₹408. By what percent did it come down?
  4. 4.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  5. 5.A shop sells 900 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  6. 6.A town has 4620 people. Its population grows by 50%. How many people live there now?
  7. 7.The price of a school bag changes from ₹960 to ₹1344. By what percent did it go up?
  8. 8.A water tank holds 4800 litres. 5% of the water is used. How many litres are left?
  9. 9.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  10. 10.The price of a school bag changes from ₹360 to ₹468. By what percent did it go up?
  11. 11.The price of a bicycle is ₹740. It goes up by 30%. What is the new price (in ₹)?
  12. 12.The price of a bicycle is ₹980. It goes up by 20%. What is the new price (in ₹)?
  13. 13.A shop sells 120 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  14. 14.A shop sells 3940 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  15. 15.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  16. 16.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  17. 17.A shop sells 2520 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  18. 18.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  19. 19.A water tank holds 4960 litres. 40% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹1560 to ₹1638. By what percent did it go up?
  21. 21.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  22. 22.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
  23. 23.A shop sells 3740 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  24. 24.A water tank holds 660 litres. 50% of the water is used. How many litres are left?
  25. 25.A town has 3780 people. Its population grows by 40%. How many people live there now?
  26. 26.The price of a bicycle is ₹4160. It goes up by 40%. What is the new price (in ₹)?
  27. 27.The price of a school bag changes from ₹440 to ₹374. By what percent did it come down?
  28. 28.The price of a bicycle is ₹1300. It goes up by 25%. What is the new price (in ₹)?
  29. 29.The price of a school bag changes from ₹4880 to ₹3904. By what percent did it come down?
  30. 30.A shop sells 3920 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  31. 31.A water tank holds 2060 litres. 50% of the water is used. How many litres are left?
  32. 32.A water tank holds 3480 litres. 5% of the water is used. How many litres are left?
  33. 33.The price of a bicycle is ₹3520. It goes up by 20%. What is the new price (in ₹)?
  34. 34.The price of a bicycle is ₹1100. It goes up by 10%. What is the new price (in ₹)?
  35. 35.A water tank holds 1380 litres. 10% of the water is used. How many litres are left?
  36. 36.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  37. 37.The price of a school bag changes from ₹880 to ₹1012. By what percent did it go up?
  38. 38.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  39. 39.The price of a bicycle is ₹1500. It goes up by 40%. What is the new price (in ₹)?
  40. 40.The price of a bicycle is ₹1360. It goes up by 15%. What is the new price (in ₹)?

Answer key

  1. 5
  2. 3480
  3. 15
  4. 3.5
  5. 990
  6. 6930
  7. 40
  8. 4560
  9. 20.75
  10. 30
  11. 962
  12. 1176
  13. 150
  14. 5122
  15. 4
  16. 82
  17. 3024
  18. 56.25
  19. 2976
  20. 5
  21. 43
  22. 75
  23. 4488
  24. 330
  25. 5292
  26. 5824
  27. 15
  28. 1625
  29. 20
  30. 4312
  31. 1030
  32. 3306
  33. 4224
  34. 1210
  35. 1242
  36. 55
  37. 15
  38. 43.75
  39. 2100
  40. 1564

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