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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 739 · 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 ₹4260 to ₹5964. By what percent did it go up?
  2. 2.A town has 4240 people. Its population grows by 5%. How many people live there now?
  3. 3.A price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
  4. 4.The price of a school bag changes from ₹3200 to ₹2720. By what percent did it come down?
  5. 5.The price of a school bag changes from ₹3540 to ₹2655. By what percent did it come down?
  6. 6.A water tank holds 2300 litres. 40% of the water is used. How many litres are left?
  7. 7.A town has 3780 people. Its population grows by 30%. How many people live there now?
  8. 8.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  9. 9.The price of a school bag changes from ₹1740 to ₹1305. By what percent did it come down?
  10. 10.A water tank holds 3860 litres. 25% of the water is used. How many litres are left?
  11. 11.A water tank holds 3780 litres. 5% of the water is used. How many litres are left?
  12. 12.A water tank holds 1720 litres. 10% of the water is used. How many litres are left?
  13. 13.A shop sells 1180 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  14. 14.A shop sells 4300 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  15. 15.A water tank holds 2860 litres. 10% of the water is used. How many litres are left?
  16. 16.The price of a school bag changes from ₹680 to ₹544. By what percent did it come down?
  17. 17.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  18. 18.A water tank holds 3420 litres. 5% of the water is used. How many litres are left?
  19. 19.A water tank holds 4960 litres. 10% of the water is used. How many litres are left?
  20. 20.A town has 2620 people. Its population grows by 25%. How many people live there now?
  21. 21.The price of a bicycle is ₹260. It goes up by 20%. What is the new price (in ₹)?
  22. 22.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
  23. 23.The price of a school bag changes from ₹5000 to ₹5250. By what percent did it go up?
  24. 24.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  25. 25.A town has 200 people. Its population grows by 5%. How many people live there now?
  26. 26.A water tank holds 4480 litres. 15% of the water is used. How many litres are left?
  27. 27.A shop sells 4800 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  28. 28.The price of a school bag changes from ₹4720 to ₹7080. By what percent did it go up?
  29. 29.The price of a school bag changes from ₹5000 to ₹6500. By what percent did it go up?
  30. 30.The price of a school bag changes from ₹3640 to ₹2912. By what percent did it come down?
  31. 31.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  32. 32.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  33. 33.The price of a bicycle is ₹3060. It goes up by 10%. What is the new price (in ₹)?
  34. 34.The price of a school bag changes from ₹280 to ₹322. By what percent did it go up?
  35. 35.The price of a bicycle is ₹2760. It goes up by 40%. What is the new price (in ₹)?
  36. 36.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  37. 37.A shop sells 2320 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  38. 38.The price of a school bag changes from ₹3520 to ₹3168. By what percent did it come down?
  39. 39.A price goes up by 20% and then goes up by 20% more. By what percent has it gone up in all? =
  40. 40.The price of a school bag changes from ₹4400 to ₹5720. By what percent did it go up?

Answer key

  1. 40
  2. 4452
  3. 75
  4. 15
  5. 25
  6. 1380
  7. 4914
  8. 95
  9. 25
  10. 2895
  11. 3591
  12. 1548
  13. 1770
  14. 4945
  15. 2574
  16. 20
  17. 32
  18. 3249
  19. 4464
  20. 3275
  21. 312
  22. 49.5
  23. 5
  24. 46
  25. 210
  26. 3808
  27. 6720
  28. 50
  29. 30
  30. 20
  31. 60
  32. 31.25
  33. 3366
  34. 15
  35. 3864
  36. 9.25
  37. 2784
  38. 10
  39. 44
  40. 30

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