← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 606 · 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 ₹140 to ₹154. By what percent did it go up?
  2. 2.A town has 2920 people. Its population grows by 50%. How many people live there now?
  3. 3.The price of a bicycle is ₹2680. It goes up by 50%. What is the new price (in ₹)?
  4. 4.A water tank holds 1640 litres. 25% of the water is used. How many litres are left?
  5. 5.A town has 2420 people. Its population grows by 30%. How many people live there now?
  6. 6.The price of a bicycle is ₹4260. It goes up by 10%. What is the new price (in ₹)?
  7. 7.The price of a school bag changes from ₹4720 to ₹5428. By what percent did it go up?
  8. 8.The price of a school bag changes from ₹1280 to ₹1664. By what percent did it go up?
  9. 9.A shop sells 3640 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  10. 10.The price of a bicycle is ₹4820. It goes up by 30%. What is the new price (in ₹)?
  11. 11.The price of a school bag changes from ₹320 to ₹368. By what percent did it go up?
  12. 12.A water tank holds 4400 litres. 15% of the water is used. How many litres are left?
  13. 13.A shop sells 4800 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  14. 14.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  15. 15.The price of a bicycle is ₹4200. It goes up by 5%. What is the new price (in ₹)?
  16. 16.A water tank holds 2140 litres. 30% of the water is used. How many litres are left?
  17. 17.A town has 3220 people. Its population grows by 10%. How many people live there now?
  18. 18.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =
  19. 19.A water tank holds 1100 litres. 10% of the water is used. How many litres are left?
  20. 20.The price of a bicycle is ₹4620. It goes up by 15%. What is the new price (in ₹)?
  21. 21.A town has 900 people. Its population grows by 40%. How many people live there now?
  22. 22.A water tank holds 3020 litres. 10% of the water is used. How many litres are left?
  23. 23.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  24. 24.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  25. 25.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  26. 26.The price of a school bag changes from ₹3180 to ₹4452. By what percent did it go up?
  27. 27.The price of a school bag changes from ₹4320 to ₹4752. By what percent did it go up?
  28. 28.A water tank holds 2780 litres. 15% of the water is used. How many litres are left?
  29. 29.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  30. 30.A town has 2700 people. Its population grows by 15%. How many people live there now?
  31. 31.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  32. 32.A shop sells 4380 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  33. 33.A town has 4920 people. Its population grows by 15%. How many people live there now?
  34. 34.The price of a school bag changes from ₹2020 to ₹2121. By what percent did it go up?
  35. 35.The price of a school bag changes from ₹1720 to ₹2236. By what percent did it go up?
  36. 36.The price of a school bag changes from ₹520 to ₹416. By what percent did it come down?
  37. 37.A water tank holds 3240 litres. 10% of the water is used. How many litres are left?
  38. 38.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  39. 39.A water tank holds 500 litres. 5% of the water is used. How many litres are left?
  40. 40.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =

Answer key

  1. 10
  2. 4380
  3. 4020
  4. 1230
  5. 3146
  6. 4686
  7. 15
  8. 30
  9. 4368
  10. 6266
  11. 15
  12. 3740
  13. 6240
  14. 72.5
  15. 4410
  16. 1498
  17. 3542
  18. 36.25
  19. 990
  20. 5313
  21. 1260
  22. 2718
  23. 36.5
  24. 36.5
  25. 32
  26. 40
  27. 10
  28. 2363
  29. 72.5
  30. 3105
  31. 31.25
  32. 5694
  33. 5658
  34. 5
  35. 30
  36. 20
  37. 2916
  38. 36.25
  39. 475
  40. 19

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