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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 782 · 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 ₹4880. It goes up by 25%. What is the new price (in ₹)?
  2. 2.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  3. 3.The price of a school bag changes from ₹1460 to ₹1022. By what percent did it come down?
  4. 4.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  5. 5.The price of a school bag changes from ₹1680 to ₹1596. By what percent did it come down?
  6. 6.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  7. 7.A shop sells 4800 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  8. 8.A shop sells 4220 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  9. 9.A town has 360 people. Its population grows by 10%. How many people live there now?
  10. 10.The price of a school bag changes from ₹4840 to ₹5566. By what percent did it go up?
  11. 11.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  12. 12.A town has 1320 people. Its population grows by 20%. How many people live there now?
  13. 13.The price of a bicycle is ₹4300. It goes up by 10%. What is the new price (in ₹)?
  14. 14.The price of a school bag changes from ₹1780 to ₹890. By what percent did it come down?
  15. 15.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  16. 16.The price of a school bag changes from ₹4440 to ₹5772. By what percent did it go up?
  17. 17.A water tank holds 3000 litres. 10% of the water is used. How many litres are left?
  18. 18.A shop sells 480 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  19. 19.A water tank holds 2880 litres. 15% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹280 to ₹294. By what percent did it go up?
  21. 21.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  22. 22.A price comes down by 25% and then comes down by 25% more. By what percent has it come down in all? =
  23. 23.A water tank holds 4940 litres. 50% of the water is used. How many litres are left?
  24. 24.A water tank holds 4180 litres. 40% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹400 to ₹460. By what percent did it go up?
  26. 26.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  27. 27.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  28. 28.A shop sells 3400 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  29. 29.A water tank holds 2680 litres. 20% of the water is used. How many litres are left?
  30. 30.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  31. 31.A water tank holds 3240 litres. 5% of the water is used. How many litres are left?
  32. 32.A water tank holds 3480 litres. 10% of the water is used. How many litres are left?
  33. 33.A water tank holds 2300 litres. 30% of the water is used. How many litres are left?
  34. 34.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  35. 35.The price of a school bag changes from ₹3980 to ₹3383. By what percent did it come down?
  36. 36.A water tank holds 4560 litres. 40% of the water is used. How many litres are left?
  37. 37.A shop sells 120 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  38. 38.A town has 3040 people. Its population grows by 20%. How many people live there now?
  39. 39.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  40. 40.A water tank holds 580 litres. 5% of the water is used. How many litres are left?

Answer key

  1. 6100
  2. 82
  3. 30
  4. 56.25
  5. 5
  6. 87.5
  7. 5520
  8. 5908
  9. 396
  10. 15
  11. 61
  12. 1584
  13. 4730
  14. 50
  15. 110
  16. 30
  17. 2700
  18. 720
  19. 2448
  20. 5
  21. 20.75
  22. 43.75
  23. 2470
  24. 2508
  25. 15
  26. 12.5
  27. 38
  28. 3910
  29. 2144
  30. 19.25
  31. 3078
  32. 3132
  33. 1610
  34. 75
  35. 15
  36. 2736
  37. 132
  38. 3648
  39. 9.75
  40. 551

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