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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 193 · 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 ₹2340. It goes up by 15%. What is the new price (in ₹)?
  2. 2.A shop sells 1360 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  3. 3.A water tank holds 2940 litres. 30% of the water is used. How many litres are left?
  4. 4.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  5. 5.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  6. 6.A shop sells 4200 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  7. 7.A shop sells 2900 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  8. 8.A water tank holds 1660 litres. 50% of the water is used. How many litres are left?
  9. 9.A town has 2560 people. Its population grows by 5%. How many people live there now?
  10. 10.The price of a school bag changes from ₹560 to ₹784. By what percent did it go up?
  11. 11.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
  12. 12.A price comes down by 50% and then comes down by 30% more. By what percent has it come down in all? =
  13. 13.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  14. 14.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  15. 15.A price goes up by 50% and then comes down by 30%. By what percent has it gone up in all? =
  16. 16.A water tank holds 240 litres. 40% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹1280 to ₹1216. By what percent did it come down?
  18. 18.The price of a school bag changes from ₹1700 to ₹2550. By what percent did it go up?
  19. 19.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
  20. 20.A water tank holds 4420 litres. 30% of the water is used. How many litres are left?
  21. 21.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  22. 22.The price of a school bag changes from ₹3500 to ₹4550. By what percent did it go up?
  23. 23.The price of a bicycle is ₹4220. It goes up by 15%. What is the new price (in ₹)?
  24. 24.A town has 760 people. Its population grows by 10%. How many people live there now?
  25. 25.A water tank holds 2500 litres. 50% of the water is used. How many litres are left?
  26. 26.A water tank holds 4940 litres. 30% of the water is used. How many litres are left?
  27. 27.A town has 3300 people. Its population grows by 50%. How many people live there now?
  28. 28.A town has 4180 people. Its population grows by 15%. How many people live there now?
  29. 29.The price of a school bag changes from ₹1660 to ₹1992. By what percent did it go up?
  30. 30.The price of a bicycle is ₹2900. It goes up by 5%. What is the new price (in ₹)?
  31. 31.The price of a bicycle is ₹1180. It goes up by 25%. What is the new price (in ₹)?
  32. 32.A town has 520 people. Its population grows by 5%. How many people live there now?
  33. 33.The price of a school bag changes from ₹2380 to ₹2499. By what percent did it go up?
  34. 34.A town has 2840 people. Its population grows by 20%. How many people live there now?
  35. 35.The price of a school bag changes from ₹340 to ₹357. By what percent did it go up?
  36. 36.A water tank holds 4160 litres. 5% of the water is used. How many litres are left?
  37. 37.The price of a bicycle is ₹2660. It goes up by 30%. What is the new price (in ₹)?
  38. 38.The price of a school bag changes from ₹4340 to ₹3906. By what percent did it come down?
  39. 39.A town has 720 people. Its population grows by 50%. How many people live there now?
  40. 40.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =

Answer key

  1. 2691
  2. 2040
  3. 2058
  4. 37.5
  5. 10.25
  6. 4410
  7. 3335
  8. 830
  9. 2688
  10. 40
  11. 24
  12. 65
  13. 110
  14. 15.5
  15. 5
  16. 144
  17. 5
  18. 50
  19. 75
  20. 3094
  21. 57.5
  22. 30
  23. 4853
  24. 836
  25. 1250
  26. 3458
  27. 4950
  28. 4807
  29. 20
  30. 3045
  31. 1475
  32. 546
  33. 5
  34. 3408
  35. 5
  36. 3952
  37. 3458
  38. 10
  39. 1080
  40. 57.5

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