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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 313 · 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 price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  2. 2.The price of a bicycle is ₹280. It goes up by 30%. What is the new price (in ₹)?
  3. 3.The price of a school bag changes from ₹160 to ₹136. By what percent did it come down?
  4. 4.The price of a bicycle is ₹4540. It goes up by 20%. What is the new price (in ₹)?
  5. 5.A town has 1380 people. Its population grows by 10%. How many people live there now?
  6. 6.A water tank holds 1180 litres. 50% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹4080 to ₹3876. By what percent did it come down?
  8. 8.A town has 3320 people. Its population grows by 5%. How many people live there now?
  9. 9.The price of a bicycle is ₹3680. It goes up by 50%. What is the new price (in ₹)?
  10. 10.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  11. 11.The price of a school bag changes from ₹3540 to ₹2124. By what percent did it come down?
  12. 12.A price goes up by 30% and then goes up by 20% more. By what percent has it gone up in all? =
  13. 13.A water tank holds 1140 litres. 50% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹1860 to ₹2232. By what percent did it go up?
  15. 15.A water tank holds 1920 litres. 5% of the water is used. How many litres are left?
  16. 16.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  17. 17.The price of a bicycle is ₹1380. It goes up by 5%. What is the new price (in ₹)?
  18. 18.The price of a bicycle is ₹420. It goes up by 10%. What is the new price (in ₹)?
  19. 19.A shop sells 2280 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  20. 20.A town has 100 people. Its population grows by 50%. How many people live there now?
  21. 21.A price goes up by 20% and then goes up by 20% more. By what percent has it gone up in all? =
  22. 22.The price of a bicycle is ₹1480. It goes up by 30%. What is the new price (in ₹)?
  23. 23.The price of a school bag changes from ₹2860 to ₹4004. By what percent did it go up?
  24. 24.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  25. 25.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  26. 26.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  27. 27.A town has 160 people. Its population grows by 5%. How many people live there now?
  28. 28.A water tank holds 4500 litres. 5% of the water is used. How many litres are left?
  29. 29.The price of a school bag changes from ₹920 to ₹966. By what percent did it go up?
  30. 30.A shop sells 2640 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  31. 31.The price of a school bag changes from ₹2720 to ₹1904. By what percent did it come down?
  32. 32.A water tank holds 2500 litres. 25% of the water is used. How many litres are left?
  33. 33.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹320 to ₹192. By what percent did it come down?
  35. 35.The price of a school bag changes from ₹2240 to ₹2576. By what percent did it go up?
  36. 36.A town has 2200 people. Its population grows by 20%. How many people live there now?
  37. 37.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  38. 38.The price of a school bag changes from ₹4960 to ₹6200. By what percent did it go up?
  39. 39.The price of a bicycle is ₹700. It goes up by 20%. What is the new price (in ₹)?
  40. 40.A shop sells 3000 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?

Answer key

  1. 23.5
  2. 364
  3. 15
  4. 5448
  5. 1518
  6. 590
  7. 5
  8. 3486
  9. 5520
  10. 52
  11. 40
  12. 56
  13. 570
  14. 20
  15. 1824
  16. 54
  17. 1449
  18. 462
  19. 2964
  20. 150
  21. 44
  22. 1924
  23. 40
  24. 36.5
  25. 95
  26. 46
  27. 168
  28. 4275
  29. 5
  30. 3036
  31. 30
  32. 1875
  33. 61
  34. 40
  35. 15
  36. 2640
  37. 9.25
  38. 25
  39. 840
  40. 3600

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