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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 856 · 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 ₹940 to ₹1175. By what percent did it go up?
  2. 2.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  3. 3.The price of a bicycle is ₹2660. It goes up by 50%. What is the new price (in ₹)?
  4. 4.A water tank holds 3840 litres. 25% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹1520 to ₹1672. By what percent did it go up?
  6. 6.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  7. 7.A water tank holds 1420 litres. 25% of the water is used. How many litres are left?
  8. 8.A town has 880 people. Its population grows by 50%. How many people live there now?
  9. 9.The price of a school bag changes from ₹2840 to ₹3124. By what percent did it go up?
  10. 10.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  11. 11.The price of a school bag changes from ₹4120 to ₹4738. By what percent did it go up?
  12. 12.The price of a school bag changes from ₹2980 to ₹4470. By what percent did it go up?
  13. 13.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
  14. 14.A shop sells 2480 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  15. 15.The price of a school bag changes from ₹3460 to ₹2422. By what percent did it come down?
  16. 16.A water tank holds 2480 litres. 40% of the water is used. How many litres are left?
  17. 17.A water tank holds 3180 litres. 30% of the water is used. How many litres are left?
  18. 18.A town has 140 people. Its population grows by 15%. How many people live there now?
  19. 19.A town has 1780 people. Its population grows by 50%. How many people live there now?
  20. 20.The price of a school bag changes from ₹1160 to ₹1102. By what percent did it come down?
  21. 21.The price of a bicycle is ₹740. It goes up by 30%. What is the new price (in ₹)?
  22. 22.The price of a school bag changes from ₹1880 to ₹2820. By what percent did it go up?
  23. 23.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  24. 24.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
  25. 25.The price of a school bag changes from ₹1980 to ₹2970. By what percent did it go up?
  26. 26.The price of a school bag changes from ₹4820 to ₹3856. By what percent did it come down?
  27. 27.A town has 3820 people. Its population grows by 40%. How many people live there now?
  28. 28.A water tank holds 4540 litres. 10% of the water is used. How many litres are left?
  29. 29.A water tank holds 3280 litres. 50% of the water is used. How many litres are left?
  30. 30.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  31. 31.A water tank holds 4640 litres. 10% of the water is used. How many litres are left?
  32. 32.A water tank holds 2920 litres. 25% of the water is used. How many litres are left?
  33. 33.A water tank holds 3060 litres. 15% of the water is used. How many litres are left?
  34. 34.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  35. 35.The price of a bicycle is ₹4740. It goes up by 5%. What is the new price (in ₹)?
  36. 36.The price of a bicycle is ₹920. It goes up by 40%. What is the new price (in ₹)?
  37. 37.A shop sells 3500 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  38. 38.The price of a bicycle is ₹1520. It goes up by 10%. What is the new price (in ₹)?
  39. 39.A town has 4660 people. Its population grows by 30%. How many people live there now?
  40. 40.The price of a bicycle is ₹2800. It goes up by 40%. What is the new price (in ₹)?

Answer key

  1. 25
  2. 26
  3. 3990
  4. 2880
  5. 10
  6. 14.5
  7. 1065
  8. 1320
  9. 10
  10. 43
  11. 15
  12. 50
  13. 69
  14. 3224
  15. 30
  16. 1488
  17. 2226
  18. 161
  19. 2670
  20. 5
  21. 962
  22. 50
  23. 32
  24. 28.75
  25. 50
  26. 20
  27. 5348
  28. 4086
  29. 1640
  30. 52.5
  31. 4176
  32. 2190
  33. 2601
  34. 43
  35. 4977
  36. 1288
  37. 3850
  38. 1672
  39. 6058
  40. 3920

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