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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 2 · 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 shop sells 2720 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  2. 2.A water tank holds 4700 litres. 25% of the water is used. How many litres are left?
  3. 3.A water tank holds 860 litres. 30% of the water is used. How many litres are left?
  4. 4.A water tank holds 2240 litres. 40% of the water is used. How many litres are left?
  5. 5.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  6. 6.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  7. 7.The price of a school bag changes from ₹4800 to ₹6240. By what percent did it go up?
  8. 8.A water tank holds 160 litres. 30% of the water is used. How many litres are left?
  9. 9.A water tank holds 1620 litres. 10% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹3480 to ₹4002. By what percent did it go up?
  11. 11.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  12. 12.The price of a school bag changes from ₹3680 to ₹4784. By what percent did it go up?
  13. 13.The price of a school bag changes from ₹1620 to ₹1863. By what percent did it go up?
  14. 14.A price goes up by 20% and then goes up by 25% more. By what percent has it gone up in all? =
  15. 15.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
  16. 16.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  17. 17.A water tank holds 5000 litres. 5% of the water is used. How many litres are left?
  18. 18.A water tank holds 480 litres. 10% of the water is used. How many litres are left?
  19. 19.A town has 3640 people. Its population grows by 40%. How many people live there now?
  20. 20.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  21. 21.The price of a school bag changes from ₹780 to ₹390. By what percent did it come down?
  22. 22.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  23. 23.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  24. 24.The price of a school bag changes from ₹4460 to ₹5575. By what percent did it go up?
  25. 25.The price of a school bag changes from ₹2600 to ₹3640. By what percent did it go up?
  26. 26.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  27. 27.A water tank holds 660 litres. 25% of the water is used. How many litres are left?
  28. 28.A water tank holds 1280 litres. 5% of the water is used. How many litres are left?
  29. 29.A water tank holds 4180 litres. 50% of the water is used. How many litres are left?
  30. 30.A water tank holds 660 litres. 5% of the water is used. How many litres are left?
  31. 31.A town has 820 people. Its population grows by 5%. How many people live there now?
  32. 32.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  33. 33.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  34. 34.A shop sells 4700 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  35. 35.The price of a school bag changes from ₹4900 to ₹5145. By what percent did it go up?
  36. 36.A town has 1800 people. Its population grows by 15%. How many people live there now?
  37. 37.The price of a bicycle is ₹1380. It goes up by 15%. What is the new price (in ₹)?
  38. 38.A water tank holds 4200 litres. 40% of the water is used. How many litres are left?
  39. 39.A shop sells 4920 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  40. 40.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =

Answer key

  1. 2992
  2. 3525
  3. 602
  4. 1344
  5. 110
  6. 36.5
  7. 30
  8. 112
  9. 1458
  10. 15
  11. 35
  12. 30
  13. 15
  14. 50
  15. 125
  16. 55
  17. 4750
  18. 432
  19. 5096
  20. 3.5
  21. 50
  22. 36.25
  23. 52.5
  24. 25
  25. 40
  26. 70
  27. 495
  28. 1216
  29. 2090
  30. 627
  31. 861
  32. 52.5
  33. 32
  34. 7050
  35. 5
  36. 2070
  37. 1587
  38. 2520
  39. 5412
  40. 12

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