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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 167 · 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 20%. What is the new price (in ₹)?
  2. 2.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  3. 3.A town has 4500 people. Its population grows by 30%. How many people live there now?
  4. 4.A water tank holds 1400 litres. 20% of the water is used. How many litres are left?
  5. 5.A water tank holds 1320 litres. 15% of the water is used. How many litres are left?
  6. 6.A town has 260 people. Its population grows by 40%. How many people live there now?
  7. 7.The price of a school bag changes from ₹340 to ₹510. By what percent did it go up?
  8. 8.The price of a bicycle is ₹1100. It goes up by 40%. What is the new price (in ₹)?
  9. 9.The price of a bicycle is ₹680. It goes up by 50%. What is the new price (in ₹)?
  10. 10.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
  11. 11.A water tank holds 3680 litres. 25% of the water is used. How many litres are left?
  12. 12.The price of a bicycle is ₹1020. It goes up by 20%. What is the new price (in ₹)?
  13. 13.A water tank holds 2900 litres. 5% of the water is used. How many litres are left?
  14. 14.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  15. 15.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
  16. 16.A water tank holds 480 litres. 5% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹2360 to ₹2242. By what percent did it come down?
  18. 18.A shop sells 2260 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  19. 19.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  20. 20.The price of a bicycle is ₹3680. It goes up by 40%. What is the new price (in ₹)?
  21. 21.The price of a bicycle is ₹2440. It goes up by 15%. What is the new price (in ₹)?
  22. 22.The price of a school bag changes from ₹2040 to ₹2142. By what percent did it go up?
  23. 23.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
  24. 24.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  25. 25.The price of a school bag changes from ₹3840 to ₹4608. By what percent did it go up?
  26. 26.A shop sells 4100 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  27. 27.A shop sells 260 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  28. 28.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
  29. 29.A water tank holds 4700 litres. 30% of the water is used. How many litres are left?
  30. 30.A water tank holds 1020 litres. 5% of the water is used. How many litres are left?
  31. 31.The price of a bicycle is ₹4640. It goes up by 10%. What is the new price (in ₹)?
  32. 32.A shop sells 4440 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  33. 33.A water tank holds 3160 litres. 40% of the water is used. How many litres are left?
  34. 34.A shop sells 4840 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  35. 35.A water tank holds 740 litres. 30% of the water is used. How many litres are left?
  36. 36.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  37. 37.A town has 160 people. Its population grows by 5%. How many people live there now?
  38. 38.The price of a bicycle is ₹3600. It goes up by 40%. What is the new price (in ₹)?
  39. 39.The price of a school bag changes from ₹1060 to ₹1113. By what percent did it go up?
  40. 40.A town has 4200 people. Its population grows by 15%. How many people live there now?

Answer key

  1. 5832
  2. 33.5
  3. 5850
  4. 1120
  5. 1122
  6. 364
  7. 50
  8. 1540
  9. 1020
  10. 6.25
  11. 2760
  12. 1224
  13. 2755
  14. 56
  15. 62.5
  16. 456
  17. 5
  18. 3390
  19. 62.5
  20. 5152
  21. 2806
  22. 5
  23. 55
  24. 28.75
  25. 20
  26. 5125
  27. 286
  28. 26
  29. 3290
  30. 969
  31. 5104
  32. 4662
  33. 1896
  34. 6292
  35. 518
  36. 72.5
  37. 168
  38. 5040
  39. 5
  40. 4830

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