← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 157 · 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 comes down by 20% and then comes down by 15% more. By what percent has it come down in all? =
  2. 2.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  3. 3.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  4. 4.A town has 1960 people. Its population grows by 50%. How many people live there now?
  5. 5.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  6. 6.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  7. 7.The price of a school bag changes from ₹1820 to ₹1911. By what percent did it go up?
  8. 8.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  9. 9.A water tank holds 4320 litres. 40% of the water is used. How many litres are left?
  10. 10.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
  11. 11.The price of a bicycle is ₹4780. It goes up by 20%. What is the new price (in ₹)?
  12. 12.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  13. 13.The price of a school bag changes from ₹2040 to ₹1734. By what percent did it come down?
  14. 14.The price of a bicycle is ₹4580. It goes up by 25%. What is the new price (in ₹)?
  15. 15.The price of a school bag changes from ₹1100 to ₹550. By what percent did it come down?
  16. 16.A town has 4960 people. Its population grows by 30%. How many people live there now?
  17. 17.The price of a bicycle is ₹4460. It goes up by 50%. What is the new price (in ₹)?
  18. 18.A water tank holds 4380 litres. 10% of the water is used. How many litres are left?
  19. 19.A water tank holds 3640 litres. 30% of the water is used. How many litres are left?
  20. 20.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  21. 21.A water tank holds 1360 litres. 20% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹1960 to ₹980. By what percent did it come down?
  23. 23.The price of a school bag changes from ₹3080 to ₹4620. By what percent did it go up?
  24. 24.A water tank holds 2000 litres. 25% of the water is used. How many litres are left?
  25. 25.A shop sells 4840 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  26. 26.The price of a school bag changes from ₹2960 to ₹2516. By what percent did it come down?
  27. 27.The price of a school bag changes from ₹4940 to ₹6422. By what percent did it go up?
  28. 28.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  29. 29.A shop sells 400 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  30. 30.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
  31. 31.A shop sells 520 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  32. 32.A water tank holds 1600 litres. 25% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹4060 to ₹2842. By what percent did it come down?
  34. 34.A water tank holds 2080 litres. 40% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹2180 to ₹1962. By what percent did it come down?
  36. 36.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
  37. 37.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  38. 38.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  39. 39.The price of a bicycle is ₹440. It goes up by 10%. What is the new price (in ₹)?
  40. 40.A water tank holds 1700 litres. 15% of the water is used. How many litres are left?

Answer key

  1. 32
  2. 2
  3. 26.5
  4. 2940
  5. 37
  6. 19
  7. 5
  8. 57.5
  9. 2592
  10. 28.75
  11. 5736
  12. 15.5
  13. 15
  14. 5725
  15. 50
  16. 6448
  17. 6690
  18. 3942
  19. 2548
  20. 4.5
  21. 1088
  22. 50
  23. 50
  24. 1500
  25. 7260
  26. 15
  27. 30
  28. 23.5
  29. 560
  30. 26
  31. 780
  32. 1200
  33. 30
  34. 1248
  35. 10
  36. 55
  37. 65
  38. 56
  39. 484
  40. 1445

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