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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 588 · 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 water tank holds 860 litres. 40% of the water is used. How many litres are left?
  2. 2.The price of a bicycle is ₹320. It goes up by 50%. What is the new price (in ₹)?
  3. 3.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
  4. 4.A shop sells 1440 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  5. 5.A water tank holds 940 litres. 50% of the water is used. How many litres are left?
  6. 6.A town has 660 people. Its population grows by 10%. How many people live there now?
  7. 7.A town has 1640 people. Its population grows by 50%. How many people live there now?
  8. 8.A water tank holds 1860 litres. 10% of the water is used. How many litres are left?
  9. 9.A shop sells 1500 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  10. 10.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  11. 11.The price of a school bag changes from ₹2460 to ₹2829. By what percent did it go up?
  12. 12.A water tank holds 1400 litres. 5% of the water is used. How many litres are left?
  13. 13.A water tank holds 200 litres. 25% of the water is used. How many litres are left?
  14. 14.A town has 1100 people. Its population grows by 30%. How many people live there now?
  15. 15.The price of a school bag changes from ₹1400 to ₹840. By what percent did it come down?
  16. 16.A water tank holds 4580 litres. 30% of the water is used. How many litres are left?
  17. 17.The price of a bicycle is ₹1100. It goes up by 20%. What is the new price (in ₹)?
  18. 18.The price of a school bag changes from ₹2600 to ₹3380. By what percent did it go up?
  19. 19.The price of a school bag changes from ₹4700 to ₹4465. By what percent did it come down?
  20. 20.The price of a school bag changes from ₹1240 to ₹1116. By what percent did it come down?
  21. 21.The price of a school bag changes from ₹660 to ₹462. By what percent did it come down?
  22. 22.A shop sells 3940 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  23. 23.The price of a school bag changes from ₹4420 to ₹3978. By what percent did it come down?
  24. 24.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
  25. 25.The price of a bicycle is ₹3980. It goes up by 20%. What is the new price (in ₹)?
  26. 26.The price of a school bag changes from ₹1280 to ₹1536. By what percent did it go up?
  27. 27.The price of a bicycle is ₹2040. It goes up by 5%. What is the new price (in ₹)?
  28. 28.A water tank holds 3580 litres. 15% of the water is used. How many litres are left?
  29. 29.A water tank holds 3860 litres. 30% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹3980 to ₹2985. By what percent did it come down?
  31. 31.A shop sells 2280 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  32. 32.A water tank holds 1900 litres. 10% of the water is used. How many litres are left?
  33. 33.A town has 2920 people. Its population grows by 40%. How many people live there now?
  34. 34.A water tank holds 1840 litres. 30% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹360 to ₹270. By what percent did it come down?
  36. 36.The price of a school bag changes from ₹60 to ₹75. By what percent did it go up?
  37. 37.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
  38. 38.The price of a school bag changes from ₹1360 to ₹1496. By what percent did it go up?
  39. 39.A town has 4820 people. Its population grows by 5%. How many people live there now?
  40. 40.A water tank holds 1560 litres. 10% of the water is used. How many litres are left?

Answer key

  1. 516
  2. 480
  3. 19
  4. 1584
  5. 470
  6. 726
  7. 2460
  8. 1674
  9. 1950
  10. 21
  11. 15
  12. 1330
  13. 150
  14. 1430
  15. 40
  16. 3206
  17. 1320
  18. 30
  19. 5
  20. 10
  21. 30
  22. 5910
  23. 10
  24. 38
  25. 4776
  26. 20
  27. 2142
  28. 3043
  29. 2702
  30. 25
  31. 2394
  32. 1710
  33. 4088
  34. 1288
  35. 25
  36. 25
  37. 26
  38. 10
  39. 5061
  40. 1404

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