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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 906 · 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 ₹2880 to ₹4320. By what percent did it go up?
  2. 2.A shop sells 2420 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  3. 3.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  4. 4.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  5. 5.The price of a bicycle is ₹4080. It goes up by 40%. What is the new price (in ₹)?
  6. 6.A town has 3220 people. Its population grows by 40%. How many people live there now?
  7. 7.The price of a school bag changes from ₹4540 to ₹5675. By what percent did it go up?
  8. 8.The price of a school bag changes from ₹2980 to ₹2533. By what percent did it come down?
  9. 9.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  10. 10.The price of a school bag changes from ₹4940 to ₹5434. By what percent did it go up?
  11. 11.A town has 4700 people. Its population grows by 25%. How many people live there now?
  12. 12.The price of a school bag changes from ₹4680 to ₹5382. By what percent did it go up?
  13. 13.A water tank holds 3280 litres. 15% of the water is used. How many litres are left?
  14. 14.A shop sells 4680 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  15. 15.A water tank holds 3060 litres. 5% of the water is used. How many litres are left?
  16. 16.The price of a school bag changes from ₹3320 to ₹3818. By what percent did it go up?
  17. 17.A water tank holds 1960 litres. 5% of the water is used. How many litres are left?
  18. 18.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  19. 19.A water tank holds 1880 litres. 40% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹760 to ₹684. By what percent did it come down?
  21. 21.A price comes down by 20% and then comes down by 10% more. By what percent has it come down in all? =
  22. 22.The price of a bicycle is ₹3460. It goes up by 40%. What is the new price (in ₹)?
  23. 23.A water tank holds 4440 litres. 30% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹2380 to ₹1428. By what percent did it come down?
  25. 25.The price of a bicycle is ₹1760. It goes up by 30%. What is the new price (in ₹)?
  26. 26.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  27. 27.The price of a bicycle is ₹2420. It goes up by 20%. What is the new price (in ₹)?
  28. 28.The price of a school bag changes from ₹1260 to ₹630. By what percent did it come down?
  29. 29.A shop sells 860 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  30. 30.A water tank holds 4400 litres. 25% of the water is used. How many litres are left?
  31. 31.A town has 2220 people. Its population grows by 15%. How many people live there now?
  32. 32.The price of a school bag changes from ₹4420 to ₹6188. By what percent did it go up?
  33. 33.The price of a bicycle is ₹3020. It goes up by 50%. What is the new price (in ₹)?
  34. 34.A water tank holds 540 litres. 5% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹4060 to ₹2030. By what percent did it come down?
  36. 36.A water tank holds 4740 litres. 30% of the water is used. How many litres are left?
  37. 37.The price of a bicycle is ₹2860. It goes up by 10%. What is the new price (in ₹)?
  38. 38.A water tank holds 3100 litres. 15% of the water is used. How many litres are left?
  39. 39.A water tank holds 4480 litres. 5% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹1840 to ₹1472. By what percent did it come down?

Answer key

  1. 50
  2. 3146
  3. 72.5
  4. 23.5
  5. 5712
  6. 4508
  7. 25
  8. 15
  9. 32
  10. 10
  11. 5875
  12. 15
  13. 2788
  14. 4914
  15. 2907
  16. 15
  17. 1862
  18. 75
  19. 1128
  20. 10
  21. 28
  22. 4844
  23. 3108
  24. 40
  25. 2288
  26. 17
  27. 2904
  28. 50
  29. 903
  30. 3300
  31. 2553
  32. 40
  33. 4530
  34. 513
  35. 50
  36. 3318
  37. 3146
  38. 2635
  39. 4256
  40. 20

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