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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 784 · 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 ₹2960. It goes up by 5%. What is the new price (in ₹)?
  2. 2.A shop sells 2000 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  3. 3.A town has 840 people. Its population grows by 40%. How many people live there now?
  4. 4.The price of a bicycle is ₹200. It goes up by 10%. What is the new price (in ₹)?
  5. 5.The price of a school bag changes from ₹3860 to ₹3474. By what percent did it come down?
  6. 6.A water tank holds 4520 litres. 30% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹260 to ₹234. By what percent did it come down?
  8. 8.A water tank holds 3100 litres. 30% of the water is used. How many litres are left?
  9. 9.A water tank holds 200 litres. 40% of the water is used. How many litres are left?
  10. 10.A water tank holds 2860 litres. 30% of the water is used. How many litres are left?
  11. 11.The price of a bicycle is ₹4260. It goes up by 25%. What is the new price (in ₹)?
  12. 12.The price of a bicycle is ₹3420. It goes up by 50%. What is the new price (in ₹)?
  13. 13.A shop sells 3040 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  14. 14.A water tank holds 880 litres. 15% of the water is used. How many litres are left?
  15. 15.The price of a bicycle is ₹1840. It goes up by 10%. What is the new price (in ₹)?
  16. 16.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  17. 17.A water tank holds 1440 litres. 15% of the water is used. How many litres are left?
  18. 18.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
  19. 19.A water tank holds 4260 litres. 10% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹2000 to ₹2200. By what percent did it go up?
  21. 21.A shop sells 4380 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  22. 22.The price of a bicycle is ₹720. It goes up by 40%. What is the new price (in ₹)?
  23. 23.A water tank holds 3520 litres. 10% of the water is used. How many litres are left?
  24. 24.A shop sells 2460 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  25. 25.A water tank holds 2160 litres. 25% of the water is used. How many litres are left?
  26. 26.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  27. 27.The price of a bicycle is ₹3700. It goes up by 30%. What is the new price (in ₹)?
  28. 28.The price of a school bag changes from ₹660 to ₹594. By what percent did it come down?
  29. 29.A water tank holds 1140 litres. 40% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹3900 to ₹2730. By what percent did it come down?
  31. 31.The price of a school bag changes from ₹960 to ₹576. By what percent did it come down?
  32. 32.A water tank holds 1340 litres. 30% of the water is used. How many litres are left?
  33. 33.A water tank holds 4900 litres. 5% of the water is used. How many litres are left?
  34. 34.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  35. 35.The price of a school bag changes from ₹2880 to ₹4320. By what percent did it go up?
  36. 36.A town has 4300 people. Its population grows by 30%. How many people live there now?
  37. 37.The price of a school bag changes from ₹3700 to ₹2775. By what percent did it come down?
  38. 38.The price of a school bag changes from ₹4360 to ₹5668. By what percent did it go up?
  39. 39.A water tank holds 280 litres. 10% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹2720 to ₹2856. By what percent did it go up?

Answer key

  1. 3108
  2. 2400
  3. 1176
  4. 220
  5. 10
  6. 3164
  7. 10
  8. 2170
  9. 120
  10. 2002
  11. 5325
  12. 5130
  13. 4560
  14. 748
  15. 2024
  16. 50
  17. 1224
  18. 49
  19. 3834
  20. 10
  21. 6570
  22. 1008
  23. 3168
  24. 3198
  25. 1620
  26. 40.5
  27. 4810
  28. 10
  29. 684
  30. 30
  31. 40
  32. 938
  33. 4655
  34. 43.75
  35. 50
  36. 5590
  37. 25
  38. 30
  39. 252
  40. 5

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