← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 361 · 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 ₹4260 to ₹5112. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹2120 to ₹2756. By what percent did it go up?
  3. 3.The price of a school bag changes from ₹60 to ₹90. By what percent did it go up?
  4. 4.A water tank holds 3700 litres. 5% of the water is used. How many litres are left?
  5. 5.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  6. 6.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
  7. 7.A town has 500 people. Its population grows by 40%. How many people live there now?
  8. 8.The price of a school bag changes from ₹3180 to ₹3657. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹1420 to ₹994. By what percent did it come down?
  10. 10.A water tank holds 2600 litres. 10% of the water is used. How many litres are left?
  11. 11.A water tank holds 580 litres. 10% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹360 to ₹432. By what percent did it go up?
  13. 13.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  14. 14.A water tank holds 2420 litres. 5% of the water is used. How many litres are left?
  15. 15.A town has 4080 people. Its population grows by 50%. How many people live there now?
  16. 16.The price of a school bag changes from ₹1500 to ₹900. By what percent did it come down?
  17. 17.A water tank holds 4080 litres. 30% of the water is used. How many litres are left?
  18. 18.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  19. 19.The price of a bicycle is ₹1620. It goes up by 30%. What is the new price (in ₹)?
  20. 20.The price of a school bag changes from ₹1700 to ₹1360. By what percent did it come down?
  21. 21.A shop sells 440 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  22. 22.A water tank holds 3620 litres. 50% of the water is used. How many litres are left?
  23. 23.A town has 3400 people. Its population grows by 20%. How many people live there now?
  24. 24.A town has 2420 people. Its population grows by 40%. How many people live there now?
  25. 25.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹4480 to ₹4256. By what percent did it come down?
  27. 27.The price of a bicycle is ₹460. It goes up by 25%. What is the new price (in ₹)?
  28. 28.The price of a bicycle is ₹4800. It goes up by 10%. What is the new price (in ₹)?
  29. 29.The price of a school bag changes from ₹4160 to ₹2912. By what percent did it come down?
  30. 30.A water tank holds 1860 litres. 10% of the water is used. How many litres are left?
  31. 31.A town has 4880 people. Its population grows by 25%. How many people live there now?
  32. 32.A shop sells 1160 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  33. 33.The price of a school bag changes from ₹4520 to ₹4746. By what percent did it go up?
  34. 34.The price of a bicycle is ₹3520. It goes up by 5%. What is the new price (in ₹)?
  35. 35.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  36. 36.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  37. 37.A water tank holds 5000 litres. 15% of the water is used. How many litres are left?
  38. 38.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  39. 39.The price of a school bag changes from ₹3320 to ₹3818. By what percent did it go up?
  40. 40.A water tank holds 4280 litres. 50% of the water is used. How many litres are left?

Answer key

  1. 20
  2. 30
  3. 50
  4. 3515
  5. 43.75
  6. 125
  7. 700
  8. 15
  9. 30
  10. 2340
  11. 522
  12. 20
  13. 15.5
  14. 2299
  15. 6120
  16. 40
  17. 2856
  18. 95
  19. 2106
  20. 20
  21. 484
  22. 1810
  23. 4080
  24. 3388
  25. 110
  26. 5
  27. 575
  28. 5280
  29. 30
  30. 1674
  31. 6100
  32. 1218
  33. 5
  34. 3696
  35. 62.5
  36. 23.5
  37. 4250
  38. 87.5
  39. 15
  40. 2140

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