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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 140 · 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 5% and then comes down by 15% more. By what percent has it come down in all? =
  2. 2.A water tank holds 980 litres. 15% of the water is used. How many litres are left?
  3. 3.A water tank holds 1500 litres. 40% of the water is used. How many litres are left?
  4. 4.A water tank holds 5000 litres. 10% of the water is used. How many litres are left?
  5. 5.The price of a bicycle is ₹4260. It goes up by 10%. What is the new price (in ₹)?
  6. 6.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  7. 7.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  8. 8.A price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
  9. 9.A shop sells 3100 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  10. 10.The price of a school bag changes from ₹2820 to ₹2397. By what percent did it come down?
  11. 11.The price of a school bag changes from ₹640 to ₹320. By what percent did it come down?
  12. 12.The price of a bicycle is ₹3960. It goes up by 5%. What is the new price (in ₹)?
  13. 13.A town has 4980 people. Its population grows by 25%. How many people live there now?
  14. 14.The price of a school bag changes from ₹3360 to ₹2856. By what percent did it come down?
  15. 15.The price of a bicycle is ₹2200. It goes up by 5%. What is the new price (in ₹)?
  16. 16.The price of a bicycle is ₹1880. It goes up by 50%. What is the new price (in ₹)?
  17. 17.A shop sells 4800 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  18. 18.A water tank holds 660 litres. 25% of the water is used. How many litres are left?
  19. 19.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  20. 20.The price of a school bag changes from ₹420 to ₹546. By what percent did it go up?
  21. 21.The price of a school bag changes from ₹4280 to ₹5350. By what percent did it go up?
  22. 22.A water tank holds 2360 litres. 5% of the water is used. How many litres are left?
  23. 23.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  24. 24.The price of a school bag changes from ₹3360 to ₹2688. By what percent did it come down?
  25. 25.The price of a school bag changes from ₹380 to ₹418. By what percent did it go up?
  26. 26.The price of a bicycle is ₹4080. It goes up by 30%. What is the new price (in ₹)?
  27. 27.A water tank holds 160 litres. 5% of the water is used. How many litres are left?
  28. 28.A water tank holds 560 litres. 5% of the water is used. How many litres are left?
  29. 29.The price of a school bag changes from ₹880 to ₹1144. By what percent did it go up?
  30. 30.A shop sells 60 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  31. 31.A water tank holds 2640 litres. 40% of the water is used. How many litres are left?
  32. 32.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  33. 33.A water tank holds 3140 litres. 10% of the water is used. How many litres are left?
  34. 34.A town has 700 people. Its population grows by 5%. How many people live there now?
  35. 35.The price of a bicycle is ₹1380. It goes up by 20%. What is the new price (in ₹)?
  36. 36.The price of a bicycle is ₹440. It goes up by 5%. What is the new price (in ₹)?
  37. 37.The price of a school bag changes from ₹2320 to ₹1160. By what percent did it come down?
  38. 38.The price of a bicycle is ₹3820. It goes up by 15%. What is the new price (in ₹)?
  39. 39.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  40. 40.The price of a bicycle is ₹2200. It goes up by 15%. What is the new price (in ₹)?

Answer key

  1. 19.25
  2. 833
  3. 900
  4. 4500
  5. 4686
  6. 87.5
  7. 55
  8. 75
  9. 3875
  10. 15
  11. 50
  12. 4158
  13. 6225
  14. 15
  15. 2310
  16. 2820
  17. 6000
  18. 495
  19. 54
  20. 30
  21. 25
  22. 2242
  23. 4.5
  24. 20
  25. 10
  26. 5304
  27. 152
  28. 532
  29. 30
  30. 69
  31. 1584
  32. 20.75
  33. 2826
  34. 735
  35. 1656
  36. 462
  37. 50
  38. 4393
  39. 43
  40. 2530

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