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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 705 · 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 town has 1340 people. Its population grows by 5%. How many people live there now?
  2. 2.The price of a bicycle is ₹3300. It goes up by 20%. What is the new price (in ₹)?
  3. 3.The price of a bicycle is ₹4560. It goes up by 25%. What is the new price (in ₹)?
  4. 4.The price of a school bag changes from ₹2300 to ₹2990. By what percent did it go up?
  5. 5.A water tank holds 4100 litres. 40% of the water is used. How many litres are left?
  6. 6.A town has 4020 people. Its population grows by 5%. How many people live there now?
  7. 7.The price of a school bag changes from ₹380 to ₹456. By what percent did it go up?
  8. 8.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  9. 9.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  10. 10.A water tank holds 4840 litres. 5% of the water is used. How many litres are left?
  11. 11.A water tank holds 3400 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 25% more. By what percent has it gone up in all? =
  13. 13.The price of a bicycle is ₹4800. It goes up by 30%. What is the new price (in ₹)?
  14. 14.A town has 4020 people. Its population grows by 15%. How many people live there now?
  15. 15.The price of a school bag changes from ₹1160 to ₹580. By what percent did it come down?
  16. 16.A water tank holds 3320 litres. 40% 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 ₹2740 to ₹3562. By what percent did it go up?
  19. 19.A shop sells 4440 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  20. 20.A water tank holds 3240 litres. 10% of the water is used. How many litres are left?
  21. 21.A water tank holds 600 litres. 25% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹580 to ₹870. By what percent did it go up?
  23. 23.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  24. 24.A water tank holds 980 litres. 15% of the water is used. How many litres are left?
  25. 25.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  26. 26.A shop sells 3800 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  27. 27.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  28. 28.The price of a school bag changes from ₹4160 to ₹3328. By what percent did it come down?
  29. 29.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  30. 30.The price of a school bag changes from ₹4520 to ₹3390. By what percent did it come down?
  31. 31.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  32. 32.A water tank holds 2800 litres. 25% of the water is used. How many litres are left?
  33. 33.The price of a bicycle is ₹1660. It goes up by 30%. What is the new price (in ₹)?
  34. 34.A water tank holds 1440 litres. 30% of the water is used. How many litres are left?
  35. 35.A water tank holds 3540 litres. 30% of the water is used. How many litres are left?
  36. 36.A town has 2040 people. Its population grows by 10%. How many people live there now?
  37. 37.A water tank holds 3080 litres. 5% of the water is used. How many litres are left?
  38. 38.A shop sells 4040 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  39. 39.A shop sells 4340 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 ₹2580. It goes up by 40%. What is the new price (in ₹)?

Answer key

  1. 1407
  2. 3960
  3. 5700
  4. 30
  5. 2460
  6. 4221
  7. 20
  8. 26.5
  9. 12
  10. 4598
  11. 1700
  12. 31.25
  13. 6240
  14. 4623
  15. 50
  16. 1992
  17. 58
  18. 30
  19. 6216
  20. 2916
  21. 450
  22. 50
  23. 95
  24. 833
  25. 26
  26. 4370
  27. 32
  28. 20
  29. 20
  30. 25
  31. 33.5
  32. 2100
  33. 2158
  34. 1008
  35. 2478
  36. 2244
  37. 2926
  38. 5050
  39. 4557
  40. 3612

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