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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 951 · 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 school bag changes from ₹1540 to ₹1078. By what percent did it come down?
  2. 2.The price of a school bag changes from ₹1040 to ₹1300. By what percent did it go up?
  3. 3.The price of a bicycle is ₹460. It goes up by 40%. What is the new price (in ₹)?
  4. 4.A water tank holds 4140 litres. 5% of the water is used. How many litres are left?
  5. 5.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  6. 6.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  7. 7.The price of a school bag changes from ₹120 to ₹126. By what percent did it go up?
  8. 8.A water tank holds 700 litres. 10% of the water is used. How many litres are left?
  9. 9.The price of a school bag changes from ₹4840 to ₹6050. By what percent did it go up?
  10. 10.A water tank holds 3900 litres. 10% of the water is used. How many litres are left?
  11. 11.A water tank holds 2000 litres. 50% of the water is used. How many litres are left?
  12. 12.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  13. 13.A water tank holds 820 litres. 15% of the water is used. How many litres are left?
  14. 14.The price of a bicycle is ₹80. It goes up by 40%. What is the new price (in ₹)?
  15. 15.A water tank holds 280 litres. 15% of the water is used. How many litres are left?
  16. 16.A town has 940 people. Its population grows by 50%. How many people live there now?
  17. 17.A water tank holds 1700 litres. 25% of the water is used. How many litres are left?
  18. 18.A water tank holds 900 litres. 5% of the water is used. How many litres are left?
  19. 19.A water tank holds 4740 litres. 20% of the water is used. How many litres are left?
  20. 20.A town has 4800 people. Its population grows by 5%. How many people live there now?
  21. 21.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  22. 22.The price of a school bag changes from ₹1060 to ₹1166. By what percent did it go up?
  23. 23.A water tank holds 1320 litres. 25% of the water is used. How many litres are left?
  24. 24.A town has 4820 people. Its population grows by 50%. How many people live there now?
  25. 25.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  26. 26.A town has 3280 people. Its population grows by 10%. How many people live there now?
  27. 27.The price of a bicycle is ₹3960. It goes up by 40%. What is the new price (in ₹)?
  28. 28.The price of a school bag changes from ₹4560 to ₹2280. By what percent did it come down?
  29. 29.The price of a school bag changes from ₹4600 to ₹3220. By what percent did it come down?
  30. 30.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  31. 31.A water tank holds 3540 litres. 5% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹540 to ₹459. By what percent did it come down?
  33. 33.The price of a school bag changes from ₹4120 to ₹6180. By what percent did it go up?
  34. 34.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  35. 35.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
  36. 36.The price of a bicycle is ₹820. It goes up by 40%. What is the new price (in ₹)?
  37. 37.A shop sells 3640 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  38. 38.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  39. 39.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  40. 40.The price of a school bag changes from ₹180 to ₹153. By what percent did it come down?

Answer key

  1. 30
  2. 25
  3. 644
  4. 3933
  5. 43
  6. 4
  7. 5
  8. 630
  9. 25
  10. 3510
  11. 1000
  12. 95
  13. 697
  14. 112
  15. 238
  16. 1410
  17. 1275
  18. 855
  19. 3792
  20. 5040
  21. 60
  22. 10
  23. 990
  24. 7230
  25. 62.5
  26. 3608
  27. 5544
  28. 50
  29. 30
  30. 27.75
  31. 3363
  32. 15
  33. 50
  34. 20
  35. 26
  36. 1148
  37. 4550
  38. 32.25
  39. 87.5
  40. 15

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