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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 20 · 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 15% and then goes up by 10% more. By what percent has it gone up in all? =
  2. 2.The price of a school bag changes from ₹3100 to ₹3720. By what percent did it go up?
  3. 3.A town has 2140 people. Its population grows by 30%. How many people live there now?
  4. 4.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  5. 5.A shop sells 2120 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  6. 6.The price of a school bag changes from ₹900 to ₹630. By what percent did it come down?
  7. 7.A shop sells 2020 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  8. 8.A water tank holds 860 litres. 5% of the water is used. How many litres are left?
  9. 9.A water tank holds 220 litres. 30% of the water is used. How many litres are left?
  10. 10.A shop sells 3980 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  11. 11.A town has 4900 people. Its population grows by 50%. How many people live there now?
  12. 12.A water tank holds 3800 litres. 5% of the water is used. How many litres are left?
  13. 13.A town has 4720 people. Its population grows by 30%. How many people live there now?
  14. 14.A town has 2980 people. Its population grows by 50%. How many people live there now?
  15. 15.A water tank holds 3320 litres. 40% of the water is used. How many litres are left?
  16. 16.The price of a bicycle is ₹2980. It goes up by 10%. What is the new price (in ₹)?
  17. 17.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  18. 18.The price of a school bag changes from ₹2780 to ₹3058. By what percent did it go up?
  19. 19.The price of a bicycle is ₹2880. It goes up by 10%. What is the new price (in ₹)?
  20. 20.The price of a bicycle is ₹1240. It goes up by 20%. What is the new price (in ₹)?
  21. 21.The price of a school bag changes from ₹380 to ₹437. By what percent did it go up?
  22. 22.The price of a school bag changes from ₹3340 to ₹3507. By what percent did it go up?
  23. 23.The price of a school bag changes from ₹2340 to ₹2691. By what percent did it go up?
  24. 24.A shop sells 600 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  25. 25.The price of a school bag changes from ₹1900 to ₹950. By what percent did it come down?
  26. 26.A water tank holds 4920 litres. 50% of the water is used. How many litres are left?
  27. 27.A shop sells 200 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  28. 28.The price of a school bag changes from ₹160 to ₹112. By what percent did it come down?
  29. 29.A town has 3980 people. Its population grows by 50%. How many people live there now?
  30. 30.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
  31. 31.A water tank holds 2740 litres. 25% of the water is used. How many litres are left?
  32. 32.A town has 4960 people. Its population grows by 5%. How many people live there now?
  33. 33.The price of a school bag changes from ₹3880 to ₹4850. By what percent did it go up?
  34. 34.A water tank holds 3280 litres. 50% of the water is used. How many litres are left?
  35. 35.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  36. 36.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  37. 37.A water tank holds 2100 litres. 50% of the water is used. How many litres are left?
  38. 38.A water tank holds 3960 litres. 25% of the water is used. How many litres are left?
  39. 39.The price of a bicycle is ₹4160. It goes up by 5%. What is the new price (in ₹)?
  40. 40.A water tank holds 400 litres. 50% of the water is used. How many litres are left?

Answer key

  1. 26.5
  2. 20
  3. 2782
  4. 56
  5. 2226
  6. 30
  7. 2121
  8. 817
  9. 154
  10. 4577
  11. 7350
  12. 3610
  13. 6136
  14. 4470
  15. 1992
  16. 3278
  17. 32.5
  18. 10
  19. 3168
  20. 1488
  21. 15
  22. 5
  23. 15
  24. 750
  25. 50
  26. 2460
  27. 220
  28. 30
  29. 5970
  30. 49
  31. 2055
  32. 5208
  33. 25
  34. 1640
  35. 50
  36. 9.75
  37. 1050
  38. 2970
  39. 4368
  40. 200

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