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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 932 · 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 ₹3620. It goes up by 10%. What is the new price (in ₹)?
  2. 2.A town has 180 people. Its population grows by 30%. How many people live there now?
  3. 3.A water tank holds 5000 litres. 30% of the water is used. How many litres are left?
  4. 4.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  5. 5.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  6. 6.A water tank holds 220 litres. 5% of the water is used. How many litres are left?
  7. 7.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
  8. 8.A water tank holds 4520 litres. 10% of the water is used. How many litres are left?
  9. 9.A water tank holds 680 litres. 15% of the water is used. How many litres are left?
  10. 10.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  11. 11.The price of a bicycle is ₹1820. It goes up by 10%. What is the new price (in ₹)?
  12. 12.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  13. 13.The price of a school bag changes from ₹740 to ₹703. By what percent did it come down?
  14. 14.The price of a school bag changes from ₹1140 to ₹1083. By what percent did it come down?
  15. 15.A town has 1300 people. Its population grows by 50%. How many people live there now?
  16. 16.A shop sells 360 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  17. 17.The price of a school bag changes from ₹1020 to ₹510. By what percent did it come down?
  18. 18.A water tank holds 4860 litres. 25% of the water is used. How many litres are left?
  19. 19.A town has 1700 people. Its population grows by 10%. How many people live there now?
  20. 20.The price of a school bag changes from ₹2760 to ₹3036. By what percent did it go up?
  21. 21.The price of a bicycle is ₹2800. It goes up by 15%. What is the new price (in ₹)?
  22. 22.The price of a bicycle is ₹3460. It goes up by 10%. What is the new price (in ₹)?
  23. 23.A town has 3780 people. Its population grows by 25%. How many people live there now?
  24. 24.A water tank holds 4780 litres. 5% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹940. It goes up by 30%. What is the new price (in ₹)?
  26. 26.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
  27. 27.The price of a school bag changes from ₹2640 to ₹2244. By what percent did it come down?
  28. 28.A water tank holds 2860 litres. 5% of the water is used. How many litres are left?
  29. 29.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  30. 30.A water tank holds 1640 litres. 50% of the water is used. How many litres are left?
  31. 31.A town has 2800 people. Its population grows by 10%. How many people live there now?
  32. 32.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
  33. 33.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  34. 34.The price of a school bag changes from ₹4760 to ₹4046. By what percent did it come down?
  35. 35.A water tank holds 4400 litres. 5% of the water is used. How many litres are left?
  36. 36.A water tank holds 3560 litres. 10% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹880 to ₹748. By what percent did it come down?
  38. 38.The price of a bicycle is ₹3580. It goes up by 40%. What is the new price (in ₹)?
  39. 39.A water tank holds 2720 litres. 40% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹760 to ₹684. By what percent did it come down?

Answer key

  1. 3982
  2. 234
  3. 3500
  4. 36.5
  5. 65
  6. 209
  7. 24
  8. 4068
  9. 578
  10. 4.5
  11. 2002
  12. 27.75
  13. 5
  14. 5
  15. 1950
  16. 432
  17. 50
  18. 3645
  19. 1870
  20. 10
  21. 3220
  22. 3806
  23. 4725
  24. 4541
  25. 1222
  26. 24
  27. 15
  28. 2717
  29. 80
  30. 820
  31. 3080
  32. 62.5
  33. 43
  34. 15
  35. 4180
  36. 3204
  37. 15
  38. 5012
  39. 1632
  40. 10

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