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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 83 · 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 school bag changes from ₹60 to ₹45. By what percent did it come down?
  2. 2.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  3. 3.The price of a school bag changes from ₹2480 to ₹2356. By what percent did it come down?
  4. 4.The price of a bicycle is ₹1380. It goes up by 10%. What is the new price (in ₹)?
  5. 5.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  6. 6.A water tank holds 2440 litres. 30% of the water is used. How many litres are left?
  7. 7.A shop sells 4460 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  8. 8.The price of a school bag changes from ₹820 to ₹656. By what percent did it come down?
  9. 9.A water tank holds 980 litres. 30% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹2620 to ₹3013. By what percent did it go up?
  11. 11.The price of a bicycle is ₹1660. It goes up by 10%. What is the new price (in ₹)?
  12. 12.The price of a bicycle is ₹300. It goes up by 20%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹3700 to ₹3515. By what percent did it come down?
  14. 14.A town has 4660 people. Its population grows by 40%. How many people live there now?
  15. 15.A shop sells 1000 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  16. 16.A water tank holds 2320 litres. 15% of the water is used. How many litres are left?
  17. 17.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  18. 18.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
  19. 19.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  20. 20.The price of a school bag changes from ₹3760 to ₹4888. By what percent did it go up?
  21. 21.A water tank holds 3680 litres. 10% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹3720 to ₹5580. By what percent did it go up?
  23. 23.A water tank holds 2280 litres. 15% of the water is used. How many litres are left?
  24. 24.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  25. 25.A water tank holds 740 litres. 50% of the water is used. How many litres are left?
  26. 26.The price of a school bag changes from ₹3500 to ₹2100. By what percent did it come down?
  27. 27.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  28. 28.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  29. 29.A price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
  30. 30.A shop sells 1780 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  31. 31.A shop sells 1080 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  32. 32.A shop sells 3180 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  33. 33.A price goes up by 50% and then comes down by 25%. By what percent has it gone up in all? =
  34. 34.A water tank holds 2340 litres. 15% of the water is used. How many litres are left?
  35. 35.A water tank holds 3860 litres. 5% of the water is used. How many litres are left?
  36. 36.The price of a bicycle is ₹1640. It goes up by 20%. What is the new price (in ₹)?
  37. 37.A town has 2800 people. Its population grows by 40%. How many people live there now?
  38. 38.The price of a bicycle is ₹2700. It goes up by 5%. What is the new price (in ₹)?
  39. 39.A water tank holds 980 litres. 10% of the water is used. How many litres are left?
  40. 40.A water tank holds 300 litres. 30% of the water is used. How many litres are left?

Answer key

  1. 25
  2. 36.5
  3. 5
  4. 1518
  5. 32
  6. 1708
  7. 5352
  8. 20
  9. 686
  10. 15
  11. 1826
  12. 360
  13. 5
  14. 6524
  15. 1200
  16. 1972
  17. 47.5
  18. 64
  19. 14.5
  20. 30
  21. 3312
  22. 50
  23. 1938
  24. 14.5
  25. 370
  26. 40
  27. 96
  28. 55
  29. 75
  30. 1869
  31. 1134
  32. 3975
  33. 12.5
  34. 1989
  35. 3667
  36. 1968
  37. 3920
  38. 2835
  39. 882
  40. 210

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