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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 147 · 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.A shop sells 3740 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  2. 2.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  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.A water tank holds 4780 litres. 15% of the water is used. How many litres are left?
  5. 5.A water tank holds 1840 litres. 5% of the water is used. How many litres are left?
  6. 6.The price of a school bag changes from ₹4820 to ₹5061. By what percent did it go up?
  7. 7.A price comes down by 50% and then comes down by 30% more. By what percent has it come down in all? =
  8. 8.The price of a school bag changes from ₹920 to ₹1150. By what percent did it go up?
  9. 9.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  10. 10.The price of a school bag changes from ₹4060 to ₹4872. By what percent did it go up?
  11. 11.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  12. 12.A price comes down by 25% and then comes down by 25% more. By what percent has it come down in all? =
  13. 13.The price of a school bag changes from ₹1500 to ₹1875. By what percent did it go up?
  14. 14.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  15. 15.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  16. 16.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  17. 17.A water tank holds 2840 litres. 10% of the water is used. How many litres are left?
  18. 18.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  19. 19.The price of a school bag changes from ₹3020 to ₹2416. By what percent did it come down?
  20. 20.The price of a school bag changes from ₹4000 to ₹2000. By what percent did it come down?
  21. 21.The price of a school bag changes from ₹1220 to ₹1708. By what percent did it go up?
  22. 22.A water tank holds 2220 litres. 30% of the water is used. How many litres are left?
  23. 23.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  24. 24.A water tank holds 1940 litres. 5% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹380 to ₹228. By what percent did it come down?
  26. 26.The price of a bicycle is ₹1300. It goes up by 15%. What is the new price (in ₹)?
  27. 27.A shop sells 1320 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  28. 28.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
  29. 29.A shop sells 1780 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  30. 30.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  31. 31.The price of a bicycle is ₹3100. It goes up by 10%. What is the new price (in ₹)?
  32. 32.A town has 840 people. Its population grows by 10%. How many people live there now?
  33. 33.A shop sells 3540 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  34. 34.The price of a school bag changes from ₹1800 to ₹1350. By what percent did it come down?
  35. 35.A shop sells 4780 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  36. 36.The price of a bicycle is ₹4520. It goes up by 5%. What is the new price (in ₹)?
  37. 37.A water tank holds 1660 litres. 10% of the water is used. How many litres are left?
  38. 38.A water tank holds 1700 litres. 20% of the water is used. How many litres are left?
  39. 39.The price of a bicycle is ₹380. It goes up by 40%. What is the new price (in ₹)?
  40. 40.The price of a bicycle is ₹3380. It goes up by 15%. What is the new price (in ₹)?

Answer key

  1. 4862
  2. 20.75
  3. 49
  4. 4063
  5. 1748
  6. 5
  7. 65
  8. 25
  9. 23.5
  10. 20
  11. 56.25
  12. 43.75
  13. 25
  14. 26.5
  15. 43
  16. 15.5
  17. 2556
  18. 57.5
  19. 20
  20. 50
  21. 40
  22. 1554
  23. 14.5
  24. 1843
  25. 40
  26. 1495
  27. 1518
  28. 58
  29. 1869
  30. 12.5
  31. 3410
  32. 924
  33. 3894
  34. 25
  35. 5019
  36. 4746
  37. 1494
  38. 1360
  39. 532
  40. 3887

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