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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 320 · 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 shop sells 4780 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  2. 2.The price of a school bag changes from ₹3960 to ₹4950. By what percent did it go up?
  3. 3.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  4. 4.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
  5. 5.The price of a school bag changes from ₹4920 to ₹6150. By what percent did it go up?
  6. 6.The price of a bicycle is ₹1600. It goes up by 50%. What is the new price (in ₹)?
  7. 7.The price of a school bag changes from ₹220 to ₹132. By what percent did it come down?
  8. 8.A water tank holds 4740 litres. 25% of the water is used. How many litres are left?
  9. 9.A water tank holds 1100 litres. 40% of the water is used. How many litres are left?
  10. 10.A town has 3180 people. Its population grows by 40%. How many people live there now?
  11. 11.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  12. 12.The price of a school bag changes from ₹3180 to ₹2226. By what percent did it come down?
  13. 13.A water tank holds 2760 litres. 15% of the water is used. How many litres are left?
  14. 14.The price of a bicycle is ₹920. It goes up by 20%. What is the new price (in ₹)?
  15. 15.The price of a school bag changes from ₹720 to ₹792. By what percent did it go up?
  16. 16.A water tank holds 240 litres. 20% of the water is used. How many litres are left?
  17. 17.A water tank holds 2640 litres. 30% of the water is used. How many litres are left?
  18. 18.The price of a school bag changes from ₹740 to ₹666. By what percent did it come down?
  19. 19.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
  20. 20.A water tank holds 1660 litres. 15% of the water is used. How many litres are left?
  21. 21.The price of a bicycle is ₹4160. It goes up by 20%. What is the new price (in ₹)?
  22. 22.The price of a school bag changes from ₹100 to ₹85. By what percent did it come down?
  23. 23.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
  24. 24.A town has 4100 people. Its population grows by 30%. How many people live there now?
  25. 25.A water tank holds 1520 litres. 30% of the water is used. How many litres are left?
  26. 26.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  27. 27.A town has 4940 people. Its population grows by 40%. How many people live there now?
  28. 28.A shop sells 4620 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  29. 29.A water tank holds 200 litres. 30% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹880 to ₹1100. By what percent did it go up?
  31. 31.The price of a bicycle is ₹1020. It goes up by 5%. What is the new price (in ₹)?
  32. 32.The price of a school bag changes from ₹1340 to ₹1273. By what percent did it come down?
  33. 33.A shop sells 2700 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  34. 34.The price of a school bag changes from ₹800 to ₹880. By what percent did it go up?
  35. 35.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  36. 36.The price of a school bag changes from ₹1860 to ₹2790. By what percent did it go up?
  37. 37.The price of a school bag changes from ₹3700 to ₹3330. By what percent did it come down?
  38. 38.The price of a bicycle is ₹3220. It goes up by 25%. What is the new price (in ₹)?
  39. 39.A water tank holds 920 litres. 10% of the water is used. How many litres are left?
  40. 40.A shop sells 4440 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?

Answer key

  1. 7170
  2. 25
  3. 20
  4. 49.5
  5. 25
  6. 2400
  7. 40
  8. 3555
  9. 660
  10. 4452
  11. 72.5
  12. 30
  13. 2346
  14. 1104
  15. 10
  16. 192
  17. 1848
  18. 10
  19. 18.75
  20. 1411
  21. 4992
  22. 15
  23. 47
  24. 5330
  25. 1064
  26. 95
  27. 6916
  28. 5775
  29. 140
  30. 25
  31. 1071
  32. 5
  33. 3375
  34. 10
  35. 9.75
  36. 50
  37. 10
  38. 4025
  39. 828
  40. 5328

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