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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 788 · 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 bicycle is ₹3400. It goes up by 50%. What is the new price (in ₹)?
  2. 2.The price of a school bag changes from ₹4680 to ₹5616. By what percent did it go up?
  3. 3.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  4. 4.A shop sells 600 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  5. 5.The price of a bicycle is ₹3320. It goes up by 15%. What is the new price (in ₹)?
  6. 6.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  7. 7.The price of a school bag changes from ₹1940 to ₹2716. By what percent did it go up?
  8. 8.A shop sells 3020 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  9. 9.A water tank holds 4680 litres. 30% of the water is used. How many litres are left?
  10. 10.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  11. 11.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
  12. 12.The price of a school bag changes from ₹3980 to ₹2388. By what percent did it come down?
  13. 13.A water tank holds 1120 litres. 10% of the water is used. How many litres are left?
  14. 14.A water tank holds 4280 litres. 40% of the water is used. How many litres are left?
  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.The price of a bicycle is ₹5000. It goes up by 10%. What is the new price (in ₹)?
  17. 17.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
  18. 18.A shop sells 1520 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  19. 19.A town has 720 people. Its population grows by 50%. How many people live there now?
  20. 20.The price of a school bag changes from ₹200 to ₹210. By what percent did it go up?
  21. 21.A water tank holds 460 litres. 50% of the water is used. How many litres are left?
  22. 22.A water tank holds 1340 litres. 40% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹4520 to ₹4972. By what percent did it go up?
  24. 24.A water tank holds 1860 litres. 50% of the water is used. How many litres are left?
  25. 25.A shop sells 400 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  26. 26.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  27. 27.The price of a school bag changes from ₹4020 to ₹6030. By what percent did it go up?
  28. 28.The price of a bicycle is ₹4460. It goes up by 20%. What is the new price (in ₹)?
  29. 29.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  30. 30.The price of a school bag changes from ₹2580 to ₹2322. By what percent did it come down?
  31. 31.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
  32. 32.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  33. 33.A price goes up by 20% and then comes down by 10%. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹3800 to ₹2850. By what percent did it come down?
  35. 35.The price of a bicycle is ₹1060. It goes up by 15%. What is the new price (in ₹)?
  36. 36.A water tank holds 2020 litres. 20% of the water is used. How many litres are left?
  37. 37.A shop sells 4140 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  38. 38.The price of a school bag changes from ₹2360 to ₹3304. By what percent did it go up?
  39. 39.The price of a school bag changes from ₹180 to ₹144. By what percent did it come down?
  40. 40.The price of a bicycle is ₹4740. It goes up by 10%. What is the new price (in ₹)?

Answer key

  1. 5100
  2. 20
  3. 20
  4. 840
  5. 3818
  6. 14.5
  7. 40
  8. 4228
  9. 3276
  10. 31.25
  11. 24
  12. 40
  13. 1008
  14. 2568
  15. 4
  16. 5500
  17. 55
  18. 1596
  19. 1080
  20. 5
  21. 230
  22. 804
  23. 10
  24. 930
  25. 460
  26. 43
  27. 50
  28. 5352
  29. 37.5
  30. 10
  31. 70
  32. 47.5
  33. 8
  34. 25
  35. 1219
  36. 1616
  37. 4968
  38. 40
  39. 20
  40. 5214

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