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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 25 · 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 ₹2140. It goes up by 5%. What is the new price (in ₹)?
  2. 2.A water tank holds 2600 litres. 10% of the water is used. How many litres are left?
  3. 3.A shop sells 2760 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  4. 4.A water tank holds 1920 litres. 20% of the water is used. How many litres are left?
  5. 5.The price of a bicycle is ₹2200. It goes up by 25%. What is the new price (in ₹)?
  6. 6.A price comes down by 25% and then comes down by 20% more. By what percent has it come down in all? =
  7. 7.A town has 4200 people. Its population grows by 15%. How many people live there now?
  8. 8.A town has 1240 people. Its population grows by 40%. How many people live there now?
  9. 9.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
  10. 10.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  11. 11.A water tank holds 1040 litres. 5% of the water is used. How many litres are left?
  12. 12.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
  13. 13.A price goes up by 50% and then comes down by 25%. By what percent has it gone up in all? =
  14. 14.The price of a school bag changes from ₹700 to ₹490. By what percent did it come down?
  15. 15.A water tank holds 2380 litres. 50% of the water is used. How many litres are left?
  16. 16.A shop sells 1080 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  17. 17.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  18. 18.A water tank holds 3840 litres. 5% of the water is used. How many litres are left?
  19. 19.A price goes up by 20% and then goes up by 20% more. By what percent has it gone up in all? =
  20. 20.A town has 180 people. Its population grows by 20%. How many people live there now?
  21. 21.The price of a school bag changes from ₹3460 to ₹3633. By what percent did it go up?
  22. 22.The price of a school bag changes from ₹3240 to ₹1620. By what percent did it come down?
  23. 23.The price of a bicycle is ₹1940. It goes up by 5%. What is the new price (in ₹)?
  24. 24.A water tank holds 4520 litres. 50% of the water is used. How many litres are left?
  25. 25.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  26. 26.A water tank holds 2680 litres. 50% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹540 to ₹702. By what percent did it go up?
  28. 28.A water tank holds 2260 litres. 50% of the water is used. How many litres are left?
  29. 29.A water tank holds 4700 litres. 10% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹3160 to ₹3476. By what percent did it go up?
  31. 31.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  32. 32.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
  33. 33.A water tank holds 2740 litres. 30% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹3980 to ₹3383. By what percent did it come down?
  35. 35.A shop sells 2040 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  36. 36.A water tank holds 2380 litres. 25% of the water is used. How many litres are left?
  37. 37.A shop sells 760 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  38. 38.A town has 3340 people. Its population grows by 50%. How many people live there now?
  39. 39.A price goes up by 20% and then goes up by 25% more. By what percent has it gone up in all? =
  40. 40.The price of a bicycle is ₹2500. It goes up by 40%. What is the new price (in ₹)?

Answer key

  1. 2247
  2. 2340
  3. 4140
  4. 1536
  5. 2750
  6. 40
  7. 4830
  8. 1736
  9. 40.5
  10. 87.5
  11. 988
  12. 70
  13. 12.5
  14. 30
  15. 1190
  16. 1134
  17. 82
  18. 3648
  19. 44
  20. 216
  21. 5
  22. 50
  23. 2037
  24. 2260
  25. 62.5
  26. 1340
  27. 30
  28. 1130
  29. 4230
  30. 10
  31. 32
  32. 62.5
  33. 1918
  34. 15
  35. 2856
  36. 1785
  37. 874
  38. 5010
  39. 50
  40. 3500

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