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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 550 · 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 price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  2. 2.The price of a school bag changes from ₹1380 to ₹2070. By what percent did it go up?
  3. 3.The price of a bicycle is ₹440. It goes up by 5%. What is the new price (in ₹)?
  4. 4.A shop sells 2560 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  5. 5.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  6. 6.The price of a bicycle is ₹3740. It goes up by 30%. What is the new price (in ₹)?
  7. 7.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  8. 8.The price of a school bag changes from ₹4320 to ₹6480. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹260 to ₹299. By what percent did it go up?
  10. 10.A price comes down by 50% and then comes down by 30% more. By what percent has it come down in all? =
  11. 11.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
  12. 12.A town has 4100 people. Its population grows by 30%. How many people live there now?
  13. 13.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
  14. 14.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
  15. 15.The price of a school bag changes from ₹1160 to ₹870. By what percent did it come down?
  16. 16.The price of a school bag changes from ₹2400 to ₹2640. By what percent did it go up?
  17. 17.The price of a bicycle is ₹3560. It goes up by 15%. What is the new price (in ₹)?
  18. 18.The price of a school bag changes from ₹4500 to ₹5175. By what percent did it go up?
  19. 19.The price of a bicycle is ₹1440. It goes up by 15%. What is the new price (in ₹)?
  20. 20.A water tank holds 840 litres. 40% of the water is used. How many litres are left?
  21. 21.The price of a school bag changes from ₹1480 to ₹1850. By what percent did it go up?
  22. 22.A shop sells 2480 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  23. 23.A water tank holds 1360 litres. 40% of the water is used. How many litres are left?
  24. 24.The price of a bicycle is ₹740. It goes up by 15%. What is the new price (in ₹)?
  25. 25.A water tank holds 3160 litres. 30% of the water is used. How many litres are left?
  26. 26.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  27. 27.The price of a bicycle is ₹160. It goes up by 10%. What is the new price (in ₹)?
  28. 28.The price of a bicycle is ₹4680. It goes up by 25%. What is the new price (in ₹)?
  29. 29.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  30. 30.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  31. 31.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  32. 32.The price of a school bag changes from ₹1340 to ₹1541. By what percent did it go up?
  33. 33.A price goes up by 50% and then comes down by 25%. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹3080 to ₹3388. By what percent did it go up?
  35. 35.The price of a school bag changes from ₹340 to ₹408. By what percent did it go up?
  36. 36.A shop sells 1240 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  37. 37.The price of a bicycle is ₹4420. It goes up by 15%. What is the new price (in ₹)?
  38. 38.A water tank holds 2000 litres. 40% of the water is used. How many litres are left?
  39. 39.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
  40. 40.The price of a school bag changes from ₹300 to ₹240. By what percent did it come down?

Answer key

  1. 32
  2. 50
  3. 462
  4. 3072
  5. 87.5
  6. 4862
  7. 62.5
  8. 50
  9. 15
  10. 65
  11. 58
  12. 5330
  13. 75
  14. 110
  15. 25
  16. 10
  17. 4094
  18. 15
  19. 1656
  20. 504
  21. 25
  22. 3472
  23. 816
  24. 851
  25. 2212
  26. 23.5
  27. 176
  28. 5850
  29. 57.5
  30. 27.5
  31. 14.5
  32. 15
  33. 12.5
  34. 10
  35. 20
  36. 1488
  37. 5083
  38. 1200
  39. 62.5
  40. 20

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