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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 770 · 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 ₹4520 to ₹3842. By what percent did it come down?
  2. 2.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  3. 3.A town has 1460 people. Its population grows by 10%. How many people live there now?
  4. 4.The price of a school bag changes from ₹2460 to ₹3198. By what percent did it go up?
  5. 5.A town has 4660 people. Its population grows by 30%. How many people live there now?
  6. 6.A water tank holds 840 litres. 20% of the water is used. How many litres are left?
  7. 7.A shop sells 3800 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  8. 8.A shop sells 1680 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  9. 9.A shop sells 2740 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  10. 10.The price of a school bag changes from ₹1760 to ₹1408. By what percent did it come down?
  11. 11.A water tank holds 480 litres. 15% of the water is used. How many litres are left?
  12. 12.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  13. 13.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  14. 14.A water tank holds 2360 litres. 50% of the water is used. How many litres are left?
  15. 15.A water tank holds 3240 litres. 5% of the water is used. How many litres are left?
  16. 16.A water tank holds 3400 litres. 25% of the water is used. How many litres are left?
  17. 17.The price of a bicycle is ₹1940. It goes up by 30%. What is the new price (in ₹)?
  18. 18.The price of a bicycle is ₹2380. It goes up by 50%. What is the new price (in ₹)?
  19. 19.A water tank holds 4440 litres. 5% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹1760 to ₹1672. By what percent did it come down?
  21. 21.A shop sells 860 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  22. 22.The price of a school bag changes from ₹1340 to ₹1876. By what percent did it go up?
  23. 23.A water tank holds 2800 litres. 20% of the water is used. How many litres are left?
  24. 24.A shop sells 740 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  25. 25.The price of a school bag changes from ₹4920 to ₹5166. By what percent did it go up?
  26. 26.A town has 4520 people. Its population grows by 15%. How many people live there now?
  27. 27.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  28. 28.A town has 5000 people. Its population grows by 15%. How many people live there now?
  29. 29.A water tank holds 1520 litres. 5% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹2640 to ₹3168. By what percent did it go up?
  31. 31.A price comes down by 20% and then comes down by 25% more. By what percent has it come down in all? =
  32. 32.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  33. 33.A shop sells 1860 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  34. 34.A town has 2320 people. Its population grows by 15%. How many people live there now?
  35. 35.The price of a school bag changes from ₹2920 to ₹3796. By what percent did it go up?
  36. 36.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  37. 37.The price of a school bag changes from ₹600 to ₹780. By what percent did it go up?
  38. 38.The price of a school bag changes from ₹3520 to ₹2640. By what percent did it come down?
  39. 39.The price of a school bag changes from ₹2580 to ₹1548. By what percent did it come down?
  40. 40.A water tank holds 560 litres. 15% of the water is used. How many litres are left?

Answer key

  1. 15
  2. 95
  3. 1606
  4. 30
  5. 6058
  6. 672
  7. 3990
  8. 2016
  9. 2877
  10. 20
  11. 408
  12. 32.5
  13. 46
  14. 1180
  15. 3078
  16. 2550
  17. 2522
  18. 3570
  19. 4218
  20. 5
  21. 989
  22. 40
  23. 2240
  24. 888
  25. 5
  26. 5198
  27. 72.5
  28. 5750
  29. 1444
  30. 20
  31. 40
  32. 27.75
  33. 2790
  34. 2668
  35. 30
  36. 61
  37. 30
  38. 25
  39. 40
  40. 476

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