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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 819 · 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 ₹4780. It goes up by 25%. What is the new price (in ₹)?
  2. 2.The price of a school bag changes from ₹2060 to ₹3090. By what percent did it go up?
  3. 3.A town has 960 people. Its population grows by 30%. How many people live there now?
  4. 4.A water tank holds 400 litres. 15% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹60 to ₹51. By what percent did it come down?
  6. 6.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  7. 7.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
  8. 8.A water tank holds 2540 litres. 5% of the water is used. How many litres are left?
  9. 9.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  10. 10.A town has 4340 people. Its population grows by 5%. How many people live there now?
  11. 11.A water tank holds 2960 litres. 50% of the water is used. How many litres are left?
  12. 12.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  13. 13.The price of a school bag changes from ₹1980 to ₹1881. By what percent did it come down?
  14. 14.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
  15. 15.A town has 3860 people. Its population grows by 50%. How many people live there now?
  16. 16.A water tank holds 1160 litres. 10% of the water is used. How many litres are left?
  17. 17.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
  18. 18.The price of a school bag changes from ₹2320 to ₹1740. By what percent did it come down?
  19. 19.A water tank holds 2480 litres. 5% of the water is used. How many litres are left?
  20. 20.A town has 3660 people. Its population grows by 50%. How many people live there now?
  21. 21.The price of a school bag changes from ₹3520 to ₹3696. By what percent did it go up?
  22. 22.The price of a school bag changes from ₹400 to ₹280. By what percent did it come down?
  23. 23.A town has 2880 people. Its population grows by 20%. How many people live there now?
  24. 24.A water tank holds 2440 litres. 5% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹120 to ₹138. By what percent did it go up?
  26. 26.A shop sells 2680 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  27. 27.The price of a school bag changes from ₹3240 to ₹3726. By what percent did it go up?
  28. 28.A shop sells 740 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  29. 29.A shop sells 3960 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  30. 30.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  31. 31.A water tank holds 2860 litres. 10% of the water is used. How many litres are left?
  32. 32.The price of a bicycle is ₹1420. It goes up by 15%. What is the new price (in ₹)?
  33. 33.A water tank holds 4020 litres. 5% of the water is used. How many litres are left?
  34. 34.A water tank holds 340 litres. 15% of the water is used. How many litres are left?
  35. 35.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  36. 36.The price of a school bag changes from ₹440 to ₹484. By what percent did it go up?
  37. 37.The price of a bicycle is ₹1300. It goes up by 40%. What is the new price (in ₹)?
  38. 38.A water tank holds 1240 litres. 25% of the water is used. How many litres are left?
  39. 39.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  40. 40.A shop sells 3100 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?

Answer key

  1. 5975
  2. 50
  3. 1248
  4. 340
  5. 15
  6. 46
  7. 44
  8. 2413
  9. 9.25
  10. 4557
  11. 1480
  12. 15.5
  13. 5
  14. 62.5
  15. 5790
  16. 1044
  17. 58
  18. 25
  19. 2356
  20. 5490
  21. 5
  22. 30
  23. 3456
  24. 2318
  25. 15
  26. 3082
  27. 15
  28. 1036
  29. 4158
  30. 70
  31. 2574
  32. 1633
  33. 3819
  34. 289
  35. 21
  36. 10
  37. 1820
  38. 930
  39. 55
  40. 3720

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