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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 821 · 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 ₹2180. It goes up by 20%. What is the new price (in ₹)?
  2. 2.A water tank holds 3860 litres. 30% of the water is used. How many litres are left?
  3. 3.The price of a bicycle is ₹380. It goes up by 40%. What is the new price (in ₹)?
  4. 4.A water tank holds 1820 litres. 20% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹2800 to ₹2940. By what percent did it go up?
  6. 6.A water tank holds 720 litres. 5% of the water is used. How many litres are left?
  7. 7.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
  8. 8.The price of a bicycle is ₹4840. It goes up by 20%. What is the new price (in ₹)?
  9. 9.A water tank holds 1480 litres. 5% of the water is used. How many litres are left?
  10. 10.A water tank holds 2080 litres. 15% of the water is used. How many litres are left?
  11. 11.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  12. 12.The price of a school bag changes from ₹3840 to ₹4800. By what percent did it go up?
  13. 13.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  14. 14.A water tank holds 4140 litres. 20% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹4540 to ₹4313. By what percent did it come down?
  16. 16.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  17. 17.The price of a bicycle is ₹3240. It goes up by 40%. What is the new price (in ₹)?
  18. 18.The price of a school bag changes from ₹1520 to ₹1900. By what percent did it go up?
  19. 19.The price of a bicycle is ₹1820. It goes up by 50%. What is the new price (in ₹)?
  20. 20.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  21. 21.A water tank holds 3860 litres. 50% of the water is used. How many litres are left?
  22. 22.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
  23. 23.The price of a bicycle is ₹140. It goes up by 50%. What is the new price (in ₹)?
  24. 24.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  25. 25.The price of a school bag changes from ₹3740 to ₹4488. By what percent did it go up?
  26. 26.A town has 1980 people. Its population grows by 15%. How many people live there now?
  27. 27.The price of a bicycle is ₹4880. It goes up by 30%. What is the new price (in ₹)?
  28. 28.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  29. 29.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  30. 30.A water tank holds 1320 litres. 40% of the water is used. How many litres are left?
  31. 31.A price goes up by 20% and then comes down by 10%. By what percent has it gone up in all? =
  32. 32.A water tank holds 2960 litres. 15% of the water is used. How many litres are left?
  33. 33.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹1640 to ₹2460. By what percent did it go up?
  35. 35.The price of a school bag changes from ₹460 to ₹414. By what percent did it come down?
  36. 36.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  37. 37.A water tank holds 120 litres. 30% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹2160 to ₹1944. By what percent did it come down?
  39. 39.The price of a school bag changes from ₹3560 to ₹3382. By what percent did it come down?
  40. 40.A shop sells 3820 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?

Answer key

  1. 2616
  2. 2702
  3. 532
  4. 1456
  5. 5
  6. 684
  7. 70
  8. 5808
  9. 1406
  10. 1768
  11. 54
  12. 25
  13. 31.25
  14. 3312
  15. 5
  16. 26.5
  17. 4536
  18. 25
  19. 2730
  20. 4.5
  21. 1930
  22. 26
  23. 210
  24. 50
  25. 20
  26. 2277
  27. 6344
  28. 20
  29. 96
  30. 792
  31. 8
  32. 2516
  33. 10.25
  34. 50
  35. 10
  36. 19
  37. 84
  38. 10
  39. 5
  40. 4011

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