← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 702 · 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 ₹1340 to ₹1608. By what percent did it go up?
  2. 2.A water tank holds 820 litres. 20% of the water is used. How many litres are left?
  3. 3.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  4. 4.A shop sells 4500 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  5. 5.A town has 1880 people. Its population grows by 10%. How many people live there now?
  6. 6.A water tank holds 3880 litres. 50% of the water is used. How many litres are left?
  7. 7.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  8. 8.A water tank holds 360 litres. 30% of the water is used. How many litres are left?
  9. 9.A water tank holds 800 litres. 30% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹4400 to ₹4180. By what percent did it come down?
  11. 11.A shop sells 1060 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  12. 12.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
  13. 13.A water tank holds 620 litres. 15% of the water is used. How many litres are left?
  14. 14.A shop sells 2360 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  15. 15.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  16. 16.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
  17. 17.A water tank holds 1320 litres. 20% of the water is used. How many litres are left?
  18. 18.A town has 2560 people. Its population grows by 10%. How many people live there now?
  19. 19.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
  20. 20.The price of a school bag changes from ₹2180 to ₹3052. By what percent did it go up?
  21. 21.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  22. 22.The price of a school bag changes from ₹1000 to ₹1300. By what percent did it go up?
  23. 23.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  24. 24.The price of a school bag changes from ₹4820 to ₹6266. By what percent did it go up?
  25. 25.A water tank holds 3940 litres. 10% of the water is used. How many litres are left?
  26. 26.The price of a bicycle is ₹2060. It goes up by 5%. What is the new price (in ₹)?
  27. 27.A water tank holds 4720 litres. 15% of the water is used. How many litres are left?
  28. 28.A shop sells 2840 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  29. 29.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  30. 30.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
  31. 31.A water tank holds 3340 litres. 50% of the water is used. How many litres are left?
  32. 32.A water tank holds 960 litres. 30% of the water is used. How many litres are left?
  33. 33.A water tank holds 580 litres. 30% of the water is used. How many litres are left?
  34. 34.A water tank holds 3920 litres. 10% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹1160 to ₹1392. By what percent did it go up?
  36. 36.The price of a school bag changes from ₹3580 to ₹4296. By what percent did it go up?
  37. 37.The price of a school bag changes from ₹2620 to ₹2489. By what percent did it come down?
  38. 38.A water tank holds 2540 litres. 20% of the water is used. How many litres are left?
  39. 39.A water tank holds 5000 litres. 15% of the water is used. How many litres are left?
  40. 40.A town has 1860 people. Its population grows by 10%. How many people live there now?

Answer key

  1. 20
  2. 656
  3. 37.5
  4. 5175
  5. 2068
  6. 1940
  7. 23.5
  8. 252
  9. 560
  10. 5
  11. 1484
  12. 47
  13. 527
  14. 3068
  15. 110
  16. 32
  17. 1056
  18. 2816
  19. 68
  20. 40
  21. 61
  22. 30
  23. 47
  24. 30
  25. 3546
  26. 2163
  27. 4012
  28. 4260
  29. 49.5
  30. 40.5
  31. 1670
  32. 672
  33. 406
  34. 3528
  35. 20
  36. 20
  37. 5
  38. 2032
  39. 4250
  40. 2046

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