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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 494 · 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 ₹4860. It goes up by 5%. What is the new price (in ₹)?
  2. 2.A town has 2200 people. Its population grows by 25%. How many people live there now?
  3. 3.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  4. 4.A shop sells 3100 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  5. 5.A town has 2500 people. Its population grows by 25%. How many people live there now?
  6. 6.The price of a school bag changes from ₹4280 to ₹5564. By what percent did it go up?
  7. 7.A shop sells 1080 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  8. 8.The price of a school bag changes from ₹1740 to ₹2262. By what percent did it go up?
  9. 9.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  10. 10.A water tank holds 140 litres. 15% of the water is used. How many litres are left?
  11. 11.A shop sells 1380 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  12. 12.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  13. 13.A water tank holds 1520 litres. 40% of the water is used. How many litres are left?
  14. 14.The price of a bicycle is ₹4460. It goes up by 50%. What is the new price (in ₹)?
  15. 15.A water tank holds 2060 litres. 15% of the water is used. How many litres are left?
  16. 16.A water tank holds 4840 litres. 30% of the water is used. How many litres are left?
  17. 17.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  18. 18.The price of a school bag changes from ₹880 to ₹616. By what percent did it come down?
  19. 19.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  20. 20.A water tank holds 4240 litres. 20% of the water is used. How many litres are left?
  21. 21.A town has 2580 people. Its population grows by 10%. How many people live there now?
  22. 22.The price of a school bag changes from ₹3580 to ₹1790. By what percent did it come down?
  23. 23.A water tank holds 1480 litres. 5% of the water is used. How many litres are left?
  24. 24.A water tank holds 3460 litres. 50% of the water is used. How many litres are left?
  25. 25.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  26. 26.A water tank holds 2160 litres. 50% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹2680 to ₹3216. By what percent did it go up?
  28. 28.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  29. 29.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  30. 30.A shop sells 2100 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  31. 31.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
  32. 32.A water tank holds 1460 litres. 10% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹3920 to ₹4508. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹3900 to ₹3120. By what percent did it come down?
  35. 35.A shop sells 3280 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  36. 36.A water tank holds 60 litres. 5% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹4840 to ₹6050. By what percent did it go up?
  38. 38.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  39. 39.The price of a school bag changes from ₹420 to ₹294. By what percent did it come down?
  40. 40.The price of a bicycle is ₹2700. It goes up by 20%. What is the new price (in ₹)?

Answer key

  1. 5103
  2. 2750
  3. 2
  4. 3720
  5. 3125
  6. 30
  7. 1404
  8. 30
  9. 31.25
  10. 119
  11. 2070
  12. 80
  13. 912
  14. 6690
  15. 1751
  16. 3388
  17. 32.5
  18. 30
  19. 19.25
  20. 3392
  21. 2838
  22. 50
  23. 1406
  24. 1730
  25. 72.5
  26. 1080
  27. 20
  28. 10.25
  29. 52
  30. 2520
  31. 49
  32. 1314
  33. 15
  34. 20
  35. 4264
  36. 57
  37. 25
  38. 65
  39. 30
  40. 3240

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