← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 50 · 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 bicycle is ₹3700. It goes up by 5%. What is the new price (in ₹)?
  2. 2.A water tank holds 80 litres. 5% of the water is used. How many litres are left?
  3. 3.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  4. 4.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  5. 5.A water tank holds 1240 litres. 20% of the water is used. How many litres are left?
  6. 6.A shop sells 3320 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  7. 7.The price of a school bag changes from ₹3120 to ₹1560. By what percent did it come down?
  8. 8.The price of a school bag changes from ₹900 to ₹1035. By what percent did it go up?
  9. 9.A town has 4300 people. Its population grows by 10%. How many people live there now?
  10. 10.The price of a school bag changes from ₹1820 to ₹1365. By what percent did it come down?
  11. 11.A water tank holds 2700 litres. 50% of the water is used. How many litres are left?
  12. 12.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  13. 13.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  14. 14.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
  15. 15.A shop sells 1360 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  16. 16.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  17. 17.A water tank holds 2080 litres. 50% of the water is used. How many litres are left?
  18. 18.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  19. 19.A water tank holds 2300 litres. 5% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹1960 to ₹1764. By what percent did it come down?
  21. 21.A town has 4640 people. Its population grows by 5%. How many people live there now?
  22. 22.A shop sells 2220 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  23. 23.A water tank holds 4880 litres. 25% of the water is used. How many litres are left?
  24. 24.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
  25. 25.A shop sells 2940 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  26. 26.The price of a school bag changes from ₹3060 to ₹3978. By what percent did it go up?
  27. 27.The price of a school bag changes from ₹340 to ₹374. By what percent did it go up?
  28. 28.The price of a bicycle is ₹3520. It goes up by 50%. What is the new price (in ₹)?
  29. 29.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  30. 30.The price of a school bag changes from ₹2700 to ₹4050. By what percent did it go up?
  31. 31.A shop sells 3280 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  32. 32.A water tank holds 3020 litres. 10% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹340 to ₹391. By what percent did it go up?
  34. 34.A town has 2780 people. Its population grows by 30%. How many people live there now?
  35. 35.The price of a school bag changes from ₹1520 to ₹1748. By what percent did it go up?
  36. 36.A shop sells 1400 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  37. 37.The price of a school bag changes from ₹520 to ₹598. By what percent did it go up?
  38. 38.The price of a school bag changes from ₹1120 to ₹840. By what percent did it come down?
  39. 39.The price of a school bag changes from ₹300 to ₹420. By what percent did it go up?
  40. 40.A town has 1960 people. Its population grows by 20%. How many people live there now?

Answer key

  1. 3885
  2. 76
  3. 23.5
  4. 70
  5. 992
  6. 3652
  7. 50
  8. 15
  9. 4730
  10. 25
  11. 1350
  12. 54
  13. 19.25
  14. 75
  15. 1700
  16. 32.5
  17. 1040
  18. 58
  19. 2185
  20. 10
  21. 4872
  22. 2442
  23. 3660
  24. 49.5
  25. 3528
  26. 30
  27. 10
  28. 5280
  29. 26.5
  30. 50
  31. 4592
  32. 2718
  33. 15
  34. 3614
  35. 15
  36. 1610
  37. 15
  38. 25
  39. 40
  40. 2352

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