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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 293 · 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 water tank holds 3340 litres. 15% of the water is used. How many litres are left?
  2. 2.The price of a bicycle is ₹2240. It goes up by 20%. What is the new price (in ₹)?
  3. 3.A water tank holds 2760 litres. 30% of the water is used. How many litres are left?
  4. 4.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  5. 5.A shop sells 3140 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  6. 6.A water tank holds 220 litres. 5% of the water is used. How many litres are left?
  7. 7.A water tank holds 1400 litres. 25% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹3640 to ₹4732. By what percent did it go up?
  9. 9.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  10. 10.The price of a school bag changes from ₹500 to ₹550. By what percent did it go up?
  11. 11.The price of a school bag changes from ₹1940 to ₹2716. By what percent did it go up?
  12. 12.A shop sells 700 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  13. 13.The price of a school bag changes from ₹1740 to ₹1827. By what percent did it go up?
  14. 14.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  15. 15.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  16. 16.A water tank holds 4260 litres. 25% of the water is used. How many litres are left?
  17. 17.The price of a bicycle is ₹2780. It goes up by 20%. What is the new price (in ₹)?
  18. 18.A shop sells 3780 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  19. 19.The price of a school bag changes from ₹380 to ₹228. By what percent did it come down?
  20. 20.A shop sells 2220 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  21. 21.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  22. 22.A water tank holds 4600 litres. 40% of the water is used. How many litres are left?
  23. 23.A price goes up by 30% and then goes up by 20% more. By what percent has it gone up in all? =
  24. 24.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  25. 25.A water tank holds 3900 litres. 20% of the water is used. How many litres are left?
  26. 26.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  27. 27.A water tank holds 2100 litres. 25% of the water is used. How many litres are left?
  28. 28.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  29. 29.A shop sells 2600 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 20% and then comes down by 40% more. By what percent has it come down in all? =
  31. 31.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  32. 32.The price of a school bag changes from ₹2660 to ₹3458. By what percent did it go up?
  33. 33.The price of a bicycle is ₹2780. It goes up by 5%. What is the new price (in ₹)?
  34. 34.The price of a school bag changes from ₹2080 to ₹1976. By what percent did it come down?
  35. 35.The price of a school bag changes from ₹3800 to ₹3230. By what percent did it come down?
  36. 36.A shop sells 4180 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  37. 37.A shop sells 3820 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  38. 38.The price of a school bag changes from ₹580 to ₹551. By what percent did it come down?
  39. 39.The price of a bicycle is ₹3200. It goes up by 5%. What is the new price (in ₹)?
  40. 40.A water tank holds 2860 litres. 30% of the water is used. How many litres are left?

Answer key

  1. 2839
  2. 2688
  3. 1932
  4. 52
  5. 3297
  6. 209
  7. 1050
  8. 30
  9. 57.5
  10. 10
  11. 40
  12. 840
  13. 5
  14. 20.75
  15. 44
  16. 3195
  17. 3336
  18. 5292
  19. 40
  20. 2442
  21. 14
  22. 2760
  23. 56
  24. 95
  25. 3120
  26. 95
  27. 1575
  28. 62.5
  29. 2730
  30. 52
  31. 33
  32. 30
  33. 2919
  34. 5
  35. 15
  36. 6270
  37. 5730
  38. 5
  39. 3360
  40. 2002

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