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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 700 · 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 price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
  2. 2.The price of a school bag changes from ₹2180 to ₹3052. By what percent did it go up?
  3. 3.A water tank holds 3520 litres. 10% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹120 to ₹84. By what percent did it come down?
  5. 5.A shop sells 4380 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  6. 6.A water tank holds 700 litres. 40% of the water is used. How many litres are left?
  7. 7.A water tank holds 700 litres. 5% of the water is used. How many litres are left?
  8. 8.A water tank holds 1020 litres. 5% of the water is used. How many litres are left?
  9. 9.A shop sells 3440 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  10. 10.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  11. 11.The price of a bicycle is ₹3600. It goes up by 40%. What is the new price (in ₹)?
  12. 12.A water tank holds 4080 litres. 20% of the water is used. How many litres are left?
  13. 13.A shop sells 1380 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  14. 14.The price of a school bag changes from ₹200 to ₹140. By what percent did it come down?
  15. 15.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  16. 16.The price of a bicycle is ₹4200. It goes up by 20%. What is the new price (in ₹)?
  17. 17.The price of a school bag changes from ₹4280 to ₹2996. By what percent did it come down?
  18. 18.A water tank holds 4060 litres. 25% of the water is used. How many litres are left?
  19. 19.A water tank holds 260 litres. 25% of the water is used. How many litres are left?
  20. 20.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  21. 21.A water tank holds 2780 litres. 20% of the water is used. How many litres are left?
  22. 22.A water tank holds 2940 litres. 10% of the water is used. How many litres are left?
  23. 23.A town has 3200 people. Its population grows by 5%. How many people live there now?
  24. 24.A shop sells 1240 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  25. 25.A shop sells 560 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  26. 26.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  27. 27.A water tank holds 1580 litres. 30% of the water is used. How many litres are left?
  28. 28.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  29. 29.The price of a school bag changes from ₹1860 to ₹2604. By what percent did it go up?
  30. 30.The price of a school bag changes from ₹1880 to ₹1786. By what percent did it come down?
  31. 31.A town has 4020 people. Its population grows by 30%. How many people live there now?
  32. 32.A shop sells 960 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  33. 33.The price of a school bag changes from ₹3900 to ₹2925. By what percent did it come down?
  34. 34.A water tank holds 320 litres. 40% of the water is used. How many litres are left?
  35. 35.A water tank holds 1400 litres. 10% of the water is used. How many litres are left?
  36. 36.The price of a school bag changes from ₹640 to ₹544. By what percent did it come down?
  37. 37.The price of a school bag changes from ₹3700 to ₹1850. By what percent did it come down?
  38. 38.A water tank holds 540 litres. 25% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹1000 to ₹600. By what percent did it come down?
  40. 40.A town has 3080 people. Its population grows by 5%. How many people live there now?

Answer key

  1. 18.75
  2. 40
  3. 3168
  4. 30
  5. 5037
  6. 420
  7. 665
  8. 969
  9. 4472
  10. 23.5
  11. 5040
  12. 3264
  13. 2070
  14. 30
  15. 36.5
  16. 5040
  17. 30
  18. 3045
  19. 195
  20. 5
  21. 2224
  22. 2646
  23. 3360
  24. 1488
  25. 700
  26. 15.5
  27. 1106
  28. 49.5
  29. 40
  30. 5
  31. 5226
  32. 1008
  33. 25
  34. 192
  35. 1260
  36. 15
  37. 50
  38. 405
  39. 40
  40. 3234

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