← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 213 · 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 goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  2. 2.The price of a bicycle is ₹2880. It goes up by 10%. What is the new price (in ₹)?
  3. 3.A water tank holds 1240 litres. 5% of the water is used. How many litres are left?
  4. 4.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
  5. 5.A town has 4480 people. Its population grows by 10%. How many people live there now?
  6. 6.The price of a bicycle is ₹2140. It goes up by 15%. What is the new price (in ₹)?
  7. 7.A shop sells 4900 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  8. 8.A water tank holds 3340 litres. 40% of the water is used. How many litres are left?
  9. 9.A water tank holds 4340 litres. 50% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹4800 to ₹3360. By what percent did it come down?
  11. 11.A town has 1540 people. Its population grows by 25%. How many people live there now?
  12. 12.A water tank holds 2500 litres. 30% of the water is used. How many litres are left?
  13. 13.A water tank holds 2560 litres. 5% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹480 to ₹528. By what percent did it go up?
  15. 15.A water tank holds 2640 litres. 5% of the water is used. How many litres are left?
  16. 16.A water tank holds 480 litres. 50% of the water is used. How many litres are left?
  17. 17.A water tank holds 1860 litres. 10% of the water is used. How many litres are left?
  18. 18.A water tank holds 4660 litres. 40% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹740 to ₹1110. By what percent did it go up?
  20. 20.The price of a school bag changes from ₹4600 to ₹3910. By what percent did it come down?
  21. 21.The price of a school bag changes from ₹4120 to ₹4326. By what percent did it go up?
  22. 22.A water tank holds 2700 litres. 10% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹700 to ₹490. By what percent did it come down?
  24. 24.A town has 4400 people. Its population grows by 15%. How many people live there now?
  25. 25.A water tank holds 1820 litres. 40% of the water is used. How many litres are left?
  26. 26.A town has 1940 people. Its population grows by 40%. How many people live there now?
  27. 27.The price of a school bag changes from ₹60 to ₹54. By what percent did it come down?
  28. 28.The price of a school bag changes from ₹100 to ₹115. By what percent did it go up?
  29. 29.The price of a school bag changes from ₹1400 to ₹1820. By what percent did it go up?
  30. 30.A water tank holds 100 litres. 25% of the water is used. How many litres are left?
  31. 31.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
  32. 32.A water tank holds 2860 litres. 20% of the water is used. How many litres are left?
  33. 33.A town has 1040 people. Its population grows by 50%. How many people live there now?
  34. 34.The price of a school bag changes from ₹560 to ₹644. By what percent did it go up?
  35. 35.A water tank holds 3120 litres. 20% of the water is used. How many litres are left?
  36. 36.The price of a bicycle is ₹440. It goes up by 10%. What is the new price (in ₹)?
  37. 37.The price of a school bag changes from ₹2920 to ₹3504. By what percent did it go up?
  38. 38.A shop sells 2620 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  39. 39.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  40. 40.A price comes down by 20% and then comes down by 15% more. By what percent has it come down in all? =

Answer key

  1. 33
  2. 3168
  3. 1178
  4. 82
  5. 4928
  6. 2461
  7. 7350
  8. 2004
  9. 2170
  10. 30
  11. 1925
  12. 1750
  13. 2432
  14. 10
  15. 2508
  16. 240
  17. 1674
  18. 2796
  19. 50
  20. 15
  21. 5
  22. 2430
  23. 30
  24. 5060
  25. 1092
  26. 2716
  27. 10
  28. 15
  29. 30
  30. 75
  31. 19
  32. 2288
  33. 1560
  34. 15
  35. 2496
  36. 484
  37. 20
  38. 3668
  39. 65
  40. 32

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