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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 478 · 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 ₹1840. It goes up by 50%. What is the new price (in ₹)?
  2. 2.A water tank holds 4320 litres. 40% of the water is used. How many litres are left?
  3. 3.The price of a school bag changes from ₹4520 to ₹6780. By what percent did it go up?
  4. 4.A water tank holds 420 litres. 30% of the water is used. How many litres are left?
  5. 5.The price of a bicycle is ₹4420. It goes up by 20%. What is the new price (in ₹)?
  6. 6.A water tank holds 4960 litres. 20% of the water is used. How many litres are left?
  7. 7.A shop sells 4620 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  8. 8.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
  9. 9.The price of a school bag changes from ₹4800 to ₹6720. By what percent did it go up?
  10. 10.A water tank holds 420 litres. 10% of the water is used. How many litres are left?
  11. 11.A shop sells 4040 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  12. 12.The price of a school bag changes from ₹2160 to ₹1512. By what percent did it come down?
  13. 13.A shop sells 3480 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  14. 14.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  15. 15.The price of a bicycle is ₹1480. It goes up by 40%. What is the new price (in ₹)?
  16. 16.A shop sells 300 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  17. 17.The price of a school bag changes from ₹4620 to ₹4389. By what percent did it come down?
  18. 18.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
  19. 19.A water tank holds 1260 litres. 30% of the water is used. How many litres are left?
  20. 20.A water tank holds 1320 litres. 50% of the water is used. How many litres are left?
  21. 21.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  22. 22.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  23. 23.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  24. 24.The price of a school bag changes from ₹3900 to ₹2925. By what percent did it come down?
  25. 25.A shop sells 4680 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  26. 26.A shop sells 900 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  27. 27.The price of a bicycle is ₹920. It goes up by 10%. What is the new price (in ₹)?
  28. 28.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  29. 29.The price of a school bag changes from ₹680 to ₹952. By what percent did it go up?
  30. 30.A town has 3080 people. Its population grows by 5%. How many people live there now?
  31. 31.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =
  32. 32.The price of a school bag changes from ₹3640 to ₹2912. By what percent did it come down?
  33. 33.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  34. 34.A water tank holds 80 litres. 40% of the water is used. How many litres are left?
  35. 35.The price of a bicycle is ₹580. It goes up by 30%. What is the new price (in ₹)?
  36. 36.The price of a school bag changes from ₹860 to ₹645. By what percent did it come down?
  37. 37.A water tank holds 4700 litres. 10% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹2100 to ₹1890. By what percent did it come down?
  39. 39.A town has 3740 people. Its population grows by 15%. How many people live there now?
  40. 40.The price of a bicycle is ₹820. It goes up by 20%. What is the new price (in ₹)?

Answer key

  1. 2760
  2. 2592
  3. 50
  4. 294
  5. 5304
  6. 3968
  7. 6468
  8. 70
  9. 40
  10. 378
  11. 4242
  12. 30
  13. 4524
  14. 65
  15. 2072
  16. 375
  17. 5
  18. 82
  19. 882
  20. 660
  21. 26.5
  22. 38
  23. 49.5
  24. 25
  25. 7020
  26. 1350
  27. 1012
  28. 47
  29. 40
  30. 3234
  31. 36.25
  32. 20
  33. 46
  34. 48
  35. 754
  36. 25
  37. 4230
  38. 10
  39. 4301
  40. 984

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