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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 267 · 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 price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  2. 2.A town has 3300 people. Its population grows by 40%. How many people live there now?
  3. 3.A shop sells 4640 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  4. 4.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  5. 5.The price of a bicycle is ₹4060. It goes up by 40%. What is the new price (in ₹)?
  6. 6.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  7. 7.A shop sells 3680 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  8. 8.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  9. 9.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  10. 10.The price of a school bag changes from ₹2260 to ₹1582. By what percent did it come down?
  11. 11.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  12. 12.A shop sells 2080 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  13. 13.The price of a bicycle is ₹4460. It goes up by 30%. What is the new price (in ₹)?
  14. 14.A water tank holds 3720 litres. 15% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹1480 to ₹1850. By what percent did it go up?
  16. 16.The price of a bicycle is ₹4940. It goes up by 5%. What is the new price (in ₹)?
  17. 17.A town has 2940 people. Its population grows by 15%. How many people live there now?
  18. 18.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
  19. 19.A water tank holds 4220 litres. 10% of the water is used. How many litres are left?
  20. 20.A water tank holds 4020 litres. 5% of the water is used. How many litres are left?
  21. 21.A water tank holds 1740 litres. 15% of the water is used. How many litres are left?
  22. 22.A water tank holds 1400 litres. 40% of the water is used. How many litres are left?
  23. 23.A water tank holds 920 litres. 15% of the water is used. How many litres are left?
  24. 24.A town has 280 people. Its population grows by 50%. How many people live there now?
  25. 25.The price of a school bag changes from ₹4500 to ₹6750. By what percent did it go up?
  26. 26.The price of a bicycle is ₹2980. It goes up by 20%. What is the new price (in ₹)?
  27. 27.A shop sells 320 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  28. 28.The price of a school bag changes from ₹1480 to ₹1406. By what percent did it come down?
  29. 29.A price goes up by 30% and then goes up by 20% more. By what percent has it gone up in all? =
  30. 30.A water tank holds 140 litres. 25% of the water is used. How many litres are left?
  31. 31.The price of a bicycle is ₹1360. It goes up by 40%. What is the new price (in ₹)?
  32. 32.A shop sells 1080 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  33. 33.The price of a school bag changes from ₹1500 to ₹1425. By what percent did it come down?
  34. 34.A water tank holds 360 litres. 10% of the water is used. How many litres are left?
  35. 35.A water tank holds 4340 litres. 5% of the water is used. How many litres are left?
  36. 36.A water tank holds 4820 litres. 25% of the water is used. How many litres are left?
  37. 37.A town has 580 people. Its population grows by 5%. How many people live there now?
  38. 38.The price of a school bag changes from ₹1140 to ₹1026. By what percent did it come down?
  39. 39.A water tank holds 720 litres. 15% of the water is used. How many litres are left?
  40. 40.A water tank holds 2680 litres. 25% of the water is used. How many litres are left?

Answer key

  1. 15.5
  2. 4620
  3. 4872
  4. 33.5
  5. 5684
  6. 37.5
  7. 4048
  8. 52.5
  9. 32
  10. 30
  11. 33.5
  12. 3120
  13. 5798
  14. 3162
  15. 25
  16. 5187
  17. 3381
  18. 44
  19. 3798
  20. 3819
  21. 1479
  22. 840
  23. 782
  24. 420
  25. 50
  26. 3576
  27. 400
  28. 5
  29. 56
  30. 105
  31. 1904
  32. 1188
  33. 5
  34. 324
  35. 4123
  36. 3615
  37. 609
  38. 10
  39. 612
  40. 2010

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