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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 694 · 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 3600 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  2. 2.A water tank holds 1440 litres. 5% of the water is used. How many litres are left?
  3. 3.The price of a bicycle is ₹1700. It goes up by 10%. What is the new price (in ₹)?
  4. 4.A shop sells 640 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  5. 5.A shop sells 2540 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  6. 6.The price of a school bag changes from ₹4320 to ₹3240. By what percent did it come down?
  7. 7.A water tank holds 2900 litres. 15% of the water is used. How many litres are left?
  8. 8.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  9. 9.A shop sells 800 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  10. 10.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  11. 11.The price of a bicycle is ₹4500. It goes up by 25%. What is the new price (in ₹)?
  12. 12.A town has 1100 people. Its population grows by 15%. How many people live there now?
  13. 13.A shop sells 200 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  14. 14.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  15. 15.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
  16. 16.A water tank holds 80 litres. 5% of the water is used. How many litres are left?
  17. 17.A water tank holds 3340 litres. 25% of the water is used. How many litres are left?
  18. 18.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  19. 19.A water tank holds 2820 litres. 40% of the water is used. How many litres are left?
  20. 20.A shop sells 300 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  21. 21.The price of a school bag changes from ₹4340 to ₹4123. By what percent did it come down?
  22. 22.The price of a bicycle is ₹1300. It goes up by 30%. What is the new price (in ₹)?
  23. 23.The price of a school bag changes from ₹540 to ₹567. By what percent did it go up?
  24. 24.A water tank holds 4640 litres. 40% of the water is used. How many litres are left?
  25. 25.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  26. 26.A water tank holds 100 litres. 10% of the water is used. How many litres are left?
  27. 27.A shop sells 440 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  28. 28.The price of a bicycle is ₹3540. It goes up by 25%. What is the new price (in ₹)?
  29. 29.The price of a school bag changes from ₹3260 to ₹1956. By what percent did it come down?
  30. 30.A water tank holds 520 litres. 50% of the water is used. How many litres are left?
  31. 31.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  32. 32.A town has 3300 people. Its population grows by 5%. How many people live there now?
  33. 33.The price of a bicycle is ₹4500. It goes up by 50%. What is the new price (in ₹)?
  34. 34.A water tank holds 4560 litres. 40% of the water is used. How many litres are left?
  35. 35.A water tank holds 160 litres. 20% of the water is used. How many litres are left?
  36. 36.A shop sells 140 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  37. 37.The price of a school bag changes from ₹1340 to ₹1206. By what percent did it come down?
  38. 38.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
  39. 39.The price of a bicycle is ₹820. It goes up by 30%. What is the new price (in ₹)?
  40. 40.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =

Answer key

  1. 4140
  2. 1368
  3. 1870
  4. 672
  5. 3810
  6. 25
  7. 2465
  8. 32.25
  9. 1040
  10. 20.75
  11. 5625
  12. 1265
  13. 240
  14. 28
  15. 62.5
  16. 76
  17. 2505
  18. 26.5
  19. 1692
  20. 360
  21. 5
  22. 1690
  23. 5
  24. 2784
  25. 33.5
  26. 90
  27. 462
  28. 4425
  29. 40
  30. 260
  31. 43
  32. 3465
  33. 6750
  34. 2736
  35. 128
  36. 182
  37. 10
  38. 49.5
  39. 1066
  40. 33

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