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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 977 · 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 25% and then goes up by 10% more. By what percent has it gone up in all? =
  2. 2.The price of a school bag changes from ₹1940 to ₹2425. By what percent did it go up?
  3. 3.A water tank holds 960 litres. 30% of the water is used. How many litres are left?
  4. 4.A shop sells 4040 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  5. 5.The price of a bicycle is ₹2280. It goes up by 10%. What is the new price (in ₹)?
  6. 6.A town has 460 people. Its population grows by 40%. How many people live there now?
  7. 7.The price of a school bag changes from ₹5000 to ₹4250. By what percent did it come down?
  8. 8.The price of a school bag changes from ₹660 to ₹561. By what percent did it come down?
  9. 9.A town has 3700 people. Its population grows by 50%. How many people live there now?
  10. 10.The price of a school bag changes from ₹900 to ₹1125. By what percent did it go up?
  11. 11.A water tank holds 1840 litres. 50% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹3280 to ₹4920. By what percent did it go up?
  13. 13.The price of a school bag changes from ₹60 to ₹57. By what percent did it come down?
  14. 14.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
  15. 15.The price of a school bag changes from ₹1940 to ₹2910. By what percent did it go up?
  16. 16.A shop sells 2100 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  17. 17.The price of a bicycle is ₹2320. It goes up by 15%. What is the new price (in ₹)?
  18. 18.A water tank holds 3120 litres. 10% of the water is used. How many litres are left?
  19. 19.The price of a bicycle is ₹2340. It goes up by 50%. What is the new price (in ₹)?
  20. 20.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  21. 21.The price of a school bag changes from ₹1800 to ₹1980. By what percent did it go up?
  22. 22.A water tank holds 760 litres. 5% of the water is used. How many litres are left?
  23. 23.A water tank holds 920 litres. 15% of the water is used. How many litres are left?
  24. 24.A shop sells 620 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  25. 25.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  26. 26.A town has 2940 people. Its population grows by 15%. How many people live there now?
  27. 27.A water tank holds 180 litres. 50% of the water is used. How many litres are left?
  28. 28.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  29. 29.A shop sells 2000 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  30. 30.A shop sells 740 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  31. 31.A water tank holds 480 litres. 5% of the water is used. How many litres are left?
  32. 32.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  33. 33.The price of a bicycle is ₹2320. It goes up by 30%. What is the new price (in ₹)?
  34. 34.A water tank holds 1620 litres. 25% of the water is used. How many litres are left?
  35. 35.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  36. 36.The price of a school bag changes from ₹2920 to ₹3358. By what percent did it go up?
  37. 37.A water tank holds 600 litres. 30% of the water is used. How many litres are left?
  38. 38.A shop sells 2280 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  39. 39.A water tank holds 4500 litres. 25% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹4560 to ₹2736. By what percent did it come down?

Answer key

  1. 37.5
  2. 25
  3. 672
  4. 6060
  5. 2508
  6. 644
  7. 15
  8. 15
  9. 5550
  10. 25
  11. 920
  12. 50
  13. 5
  14. 37
  15. 50
  16. 2205
  17. 2668
  18. 2808
  19. 3510
  20. 80
  21. 10
  22. 722
  23. 782
  24. 775
  25. 14
  26. 3381
  27. 90
  28. 26.5
  29. 3000
  30. 777
  31. 456
  32. 52
  33. 3016
  34. 1215
  35. 55
  36. 15
  37. 420
  38. 2394
  39. 3375
  40. 40

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