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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 812 · 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 bicycle is ₹940. It goes up by 30%. What is the new price (in ₹)?
  2. 2.A town has 340 people. Its population grows by 20%. How many people live there now?
  3. 3.The price of a school bag changes from ₹1120 to ₹1456. By what percent did it go up?
  4. 4.A shop sells 2380 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  5. 5.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  6. 6.The price of a school bag changes from ₹3760 to ₹2256. By what percent did it come down?
  7. 7.The price of a bicycle is ₹4560. It goes up by 50%. What is the new price (in ₹)?
  8. 8.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  9. 9.A town has 1080 people. Its population grows by 20%. How many people live there now?
  10. 10.The price of a school bag changes from ₹2300 to ₹2990. By what percent did it go up?
  11. 11.A shop sells 3500 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  12. 12.A shop sells 3340 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  13. 13.A town has 3380 people. Its population grows by 10%. How many people live there now?
  14. 14.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  15. 15.The price of a school bag changes from ₹1700 to ₹2550. By what percent did it go up?
  16. 16.A water tank holds 880 litres. 15% of the water is used. How many litres are left?
  17. 17.A town has 1480 people. Its population grows by 10%. How many people live there now?
  18. 18.A water tank holds 200 litres. 10% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹3820 to ₹3629. By what percent did it come down?
  20. 20.The price of a school bag changes from ₹2720 to ₹1360. By what percent did it come down?
  21. 21.A town has 3380 people. Its population grows by 15%. How many people live there now?
  22. 22.The price of a school bag changes from ₹1080 to ₹1242. By what percent did it go up?
  23. 23.A water tank holds 1280 litres. 30% of the water is used. How many litres are left?
  24. 24.The price of a bicycle is ₹4400. It goes up by 20%. What is the new price (in ₹)?
  25. 25.The price of a school bag changes from ₹3620 to ₹3077. By what percent did it come down?
  26. 26.The price of a bicycle is ₹100. It goes up by 10%. What is the new price (in ₹)?
  27. 27.The price of a school bag changes from ₹480 to ₹528. By what percent did it go up?
  28. 28.A water tank holds 2260 litres. 25% of the water is used. How many litres are left?
  29. 29.The price of a bicycle is ₹2340. It goes up by 30%. What is the new price (in ₹)?
  30. 30.The price of a school bag changes from ₹3080 to ₹3850. By what percent did it go up?
  31. 31.A water tank holds 580 litres. 50% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹100 to ₹140. By what percent did it go up?
  33. 33.A price goes up by 20% and then goes up by 20% more. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹340 to ₹476. By what percent did it go up?
  35. 35.The price of a bicycle is ₹3080. It goes up by 40%. What is the new price (in ₹)?
  36. 36.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  37. 37.A water tank holds 420 litres. 30% of the water is used. How many litres are left?
  38. 38.A water tank holds 1200 litres. 40% of the water is used. How many litres are left?
  39. 39.A shop sells 4780 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  40. 40.The price of a bicycle is ₹4660. It goes up by 40%. What is the new price (in ₹)?

Answer key

  1. 1222
  2. 408
  3. 30
  4. 2499
  5. 65
  6. 40
  7. 6840
  8. 54
  9. 1296
  10. 30
  11. 3850
  12. 4676
  13. 3718
  14. 4.5
  15. 50
  16. 748
  17. 1628
  18. 180
  19. 5
  20. 50
  21. 3887
  22. 15
  23. 896
  24. 5280
  25. 15
  26. 110
  27. 10
  28. 1695
  29. 3042
  30. 25
  31. 290
  32. 40
  33. 44
  34. 40
  35. 4312
  36. 52.5
  37. 294
  38. 720
  39. 5019
  40. 6524

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