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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 203 · 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 price goes up by 30% and then goes up by 20% more. By what percent has it gone up in all? =
  2. 2.A shop sells 3660 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  3. 3.The price of a school bag changes from ₹4060 to ₹4466. By what percent did it go up?
  4. 4.A shop sells 140 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  5. 5.The price of a school bag changes from ₹1740 to ₹1566. By what percent did it come down?
  6. 6.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  7. 7.The price of a school bag changes from ₹4600 to ₹3680. By what percent did it come down?
  8. 8.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  9. 9.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  10. 10.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  11. 11.The price of a school bag changes from ₹4440 to ₹3552. By what percent did it come down?
  12. 12.A shop sells 2320 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  13. 13.A shop sells 980 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  14. 14.A price comes down by 25% and then comes down by 20% more. By what percent has it come down in all? =
  15. 15.A shop sells 3580 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  16. 16.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  17. 17.The price of a bicycle is ₹540. It goes up by 30%. What is the new price (in ₹)?
  18. 18.The price of a school bag changes from ₹4860 to ₹2916. By what percent did it come down?
  19. 19.A water tank holds 4140 litres. 10% of the water is used. How many litres are left?
  20. 20.A shop sells 440 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  21. 21.A town has 1560 people. Its population grows by 25%. How many people live there now?
  22. 22.A water tank holds 2100 litres. 25% of the water is used. How many litres are left?
  23. 23.The price of a bicycle is ₹3940. It goes up by 25%. What is the new price (in ₹)?
  24. 24.A water tank holds 1360 litres. 20% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹160 to ₹80. By what percent did it come down?
  26. 26.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  27. 27.The price of a school bag changes from ₹760 to ₹988. By what percent did it go up?
  28. 28.The price of a school bag changes from ₹980 to ₹1274. By what percent did it go up?
  29. 29.The price of a school bag changes from ₹1420 to ₹1704. By what percent did it go up?
  30. 30.The price of a bicycle is ₹2100. It goes up by 5%. What is the new price (in ₹)?
  31. 31.A water tank holds 4620 litres. 50% of the water is used. How many litres are left?
  32. 32.A town has 1760 people. Its population grows by 10%. How many people live there now?
  33. 33.A shop sells 1420 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  34. 34.A water tank holds 4780 litres. 5% of the water is used. How many litres are left?
  35. 35.A town has 4340 people. Its population grows by 30%. How many people live there now?
  36. 36.The price of a school bag changes from ₹1140 to ₹798. By what percent did it come down?
  37. 37.The price of a school bag changes from ₹1620 to ₹2430. By what percent did it go up?
  38. 38.A water tank holds 4340 litres. 20% of the water is used. How many litres are left?
  39. 39.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  40. 40.The price of a school bag changes from ₹2540 to ₹2286. By what percent did it come down?

Answer key

  1. 56
  2. 4026
  3. 10
  4. 147
  5. 10
  6. 3.5
  7. 20
  8. 27.75
  9. 47.5
  10. 31.25
  11. 20
  12. 2668
  13. 1078
  14. 40
  15. 4475
  16. 23.5
  17. 702
  18. 40
  19. 3726
  20. 462
  21. 1950
  22. 1575
  23. 4925
  24. 1088
  25. 50
  26. 95
  27. 30
  28. 30
  29. 20
  30. 2205
  31. 2310
  32. 1936
  33. 2130
  34. 4541
  35. 5642
  36. 30
  37. 50
  38. 3472
  39. 54
  40. 10

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