← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 422 · 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 ₹800 to ₹920. By what percent did it go up?
  2. 2.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
  3. 3.The price of a school bag changes from ₹540 to ₹567. By what percent did it go up?
  4. 4.The price of a bicycle is ₹3900. It goes up by 5%. What is the new price (in ₹)?
  5. 5.The price of a school bag changes from ₹4540 to ₹3405. By what percent did it come down?
  6. 6.A shop sells 4020 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  7. 7.The price of a school bag changes from ₹2360 to ₹2478. By what percent did it go up?
  8. 8.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
  9. 9.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  10. 10.A water tank holds 2120 litres. 15% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹2940 to ₹4410. By what percent did it go up?
  12. 12.A water tank holds 4600 litres. 15% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹2760 to ₹1656. By what percent did it come down?
  14. 14.A price goes up by 50% and then comes down by 25%. By what percent has it gone up in all? =
  15. 15.A shop sells 880 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  16. 16.A town has 5000 people. Its population grows by 25%. How many people live there now?
  17. 17.A water tank holds 2860 litres. 50% of the water is used. How many litres are left?
  18. 18.The price of a school bag changes from ₹880 to ₹1100. By what percent did it go up?
  19. 19.A shop sells 1140 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  20. 20.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  21. 21.A water tank holds 1420 litres. 10% of the water is used. How many litres are left?
  22. 22.A town has 1620 people. Its population grows by 40%. How many people live there now?
  23. 23.A water tank holds 200 litres. 10% of the water is used. How many litres are left?
  24. 24.A water tank holds 1700 litres. 5% of the water is used. How many litres are left?
  25. 25.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹3140 to ₹4082. By what percent did it go up?
  27. 27.The price of a school bag changes from ₹100 to ₹110. By what percent did it go up?
  28. 28.A water tank holds 2100 litres. 10% of the water is used. How many litres are left?
  29. 29.The price of a school bag changes from ₹3540 to ₹5310. By what percent did it go up?
  30. 30.The price of a school bag changes from ₹2780 to ₹2641. By what percent did it come down?
  31. 31.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  32. 32.The price of a school bag changes from ₹2520 to ₹2646. By what percent did it go up?
  33. 33.A price goes up by 30% and then goes up by 20% more. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹4500 to ₹4725. By what percent did it go up?
  35. 35.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  36. 36.A town has 4060 people. Its population grows by 25%. How many people live there now?
  37. 37.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  38. 38.A town has 3180 people. Its population grows by 30%. How many people live there now?
  39. 39.A shop sells 3340 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  40. 40.The price of a school bag changes from ₹3840 to ₹5376. By what percent did it go up?

Answer key

  1. 15
  2. 6.25
  3. 5
  4. 4095
  5. 25
  6. 5226
  7. 5
  8. 10.5
  9. 14.5
  10. 1802
  11. 50
  12. 3910
  13. 40
  14. 12.5
  15. 1144
  16. 6250
  17. 1430
  18. 25
  19. 1710
  20. 5
  21. 1278
  22. 2268
  23. 180
  24. 1615
  25. 9.25
  26. 30
  27. 10
  28. 1890
  29. 50
  30. 5
  31. 19.25
  32. 5
  33. 56
  34. 5
  35. 19.25
  36. 5075
  37. 46
  38. 4134
  39. 3674
  40. 40

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude