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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 981 · 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 comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  2. 2.The price of a school bag changes from ₹260 to ₹299. By what percent did it go up?
  3. 3.A water tank holds 2320 litres. 40% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹660 to ₹858. By what percent did it go up?
  5. 5.The price of a school bag changes from ₹2900 to ₹2175. By what percent did it come down?
  6. 6.A shop sells 2020 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  7. 7.The price of a bicycle is ₹3340. It goes up by 25%. What is the new price (in ₹)?
  8. 8.The price of a school bag changes from ₹640 to ₹384. By what percent did it come down?
  9. 9.The price of a school bag changes from ₹4920 to ₹6150. By what percent did it go up?
  10. 10.A shop sells 120 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  11. 11.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  12. 12.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  13. 13.The price of a bicycle is ₹4740. It goes up by 40%. What is the new price (in ₹)?
  14. 14.A price goes up by 20% and then goes up by 25% more. By what percent has it gone up in all? =
  15. 15.A shop sells 2880 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  16. 16.The price of a school bag changes from ₹1080 to ₹810. By what percent did it come down?
  17. 17.A shop sells 3680 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  18. 18.The price of a school bag changes from ₹3940 to ₹5122. By what percent did it go up?
  19. 19.The price of a school bag changes from ₹1340 to ₹670. By what percent did it come down?
  20. 20.A town has 1980 people. Its population grows by 50%. How many people live there now?
  21. 21.A water tank holds 560 litres. 50% of the water is used. How many litres are left?
  22. 22.A town has 2760 people. Its population grows by 15%. How many people live there now?
  23. 23.A water tank holds 260 litres. 5% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹1400 to ₹2100. By what percent did it go up?
  25. 25.The price of a school bag changes from ₹1440 to ₹1368. By what percent did it come down?
  26. 26.A water tank holds 380 litres. 10% of the water is used. How many litres are left?
  27. 27.A shop sells 2040 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  28. 28.A water tank holds 1380 litres. 5% of the water is used. How many litres are left?
  29. 29.The price of a school bag changes from ₹4020 to ₹3819. By what percent did it come down?
  30. 30.The price of a school bag changes from ₹1100 to ₹660. By what percent did it come down?
  31. 31.A water tank holds 200 litres. 25% of the water is used. How many litres are left?
  32. 32.A water tank holds 1860 litres. 25% of the water is used. How many litres are left?
  33. 33.The price of a bicycle is ₹4080. It goes up by 25%. What is the new price (in ₹)?
  34. 34.The price of a school bag changes from ₹1700 to ₹1530. By what percent did it come down?
  35. 35.A water tank holds 2640 litres. 50% of the water is used. How many litres are left?
  36. 36.A shop sells 1940 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  37. 37.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  38. 38.A water tank holds 1480 litres. 10% of the water is used. How many litres are left?
  39. 39.A town has 1260 people. Its population grows by 25%. How many people live there now?
  40. 40.The price of a school bag changes from ₹1840 to ₹2392. By what percent did it go up?

Answer key

  1. 23.5
  2. 15
  3. 1392
  4. 30
  5. 25
  6. 2121
  7. 4175
  8. 40
  9. 25
  10. 144
  11. 72.5
  12. 35
  13. 6636
  14. 50
  15. 3456
  16. 25
  17. 5152
  18. 30
  19. 50
  20. 2970
  21. 280
  22. 3174
  23. 247
  24. 50
  25. 5
  26. 342
  27. 2448
  28. 1311
  29. 5
  30. 40
  31. 150
  32. 1395
  33. 5100
  34. 10
  35. 1320
  36. 2522
  37. 65
  38. 1332
  39. 1575
  40. 30

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