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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 713 · 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 ₹4740 to ₹6636. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹1280 to ₹1600. By what percent did it go up?
  3. 3.A water tank holds 220 litres. 5% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹4720 to ₹6608. By what percent did it go up?
  5. 5.A water tank holds 4080 litres. 10% of the water is used. How many litres are left?
  6. 6.A water tank holds 4140 litres. 10% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹3820 to ₹4202. By what percent did it go up?
  8. 8.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  9. 9.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  10. 10.The price of a bicycle is ₹4920. It goes up by 5%. What is the new price (in ₹)?
  11. 11.A water tank holds 1200 litres. 40% of the water is used. How many litres are left?
  12. 12.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  13. 13.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  14. 14.The price of a bicycle is ₹1460. It goes up by 20%. What is the new price (in ₹)?
  15. 15.A shop sells 1920 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  16. 16.The price of a bicycle is ₹400. It goes up by 25%. What is the new price (in ₹)?
  17. 17.The price of a bicycle is ₹2800. It goes up by 20%. What is the new price (in ₹)?
  18. 18.A water tank holds 280 litres. 20% of the water is used. How many litres are left?
  19. 19.A shop sells 1440 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  20. 20.The price of a bicycle is ₹2540. It goes up by 30%. What is the new price (in ₹)?
  21. 21.A shop sells 720 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  22. 22.The price of a bicycle is ₹4740. It goes up by 40%. What is the new price (in ₹)?
  23. 23.A water tank holds 520 litres. 50% of the water is used. How many litres are left?
  24. 24.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  25. 25.A town has 1400 people. Its population grows by 15%. How many people live there now?
  26. 26.The price of a school bag changes from ₹1780 to ₹1691. By what percent did it come down?
  27. 27.A town has 220 people. Its population grows by 50%. How many people live there now?
  28. 28.A town has 3140 people. Its population grows by 40%. How many people live there now?
  29. 29.The price of a school bag changes from ₹1740 to ₹1218. By what percent did it come down?
  30. 30.A town has 3020 people. Its population grows by 15%. How many people live there now?
  31. 31.A water tank holds 1920 litres. 25% of the water is used. How many litres are left?
  32. 32.A shop sells 4860 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  33. 33.The price of a school bag changes from ₹4640 to ₹3248. By what percent did it come down?
  34. 34.The price of a bicycle is ₹1100. It goes up by 40%. What is the new price (in ₹)?
  35. 35.The price of a bicycle is ₹1020. It goes up by 30%. What is the new price (in ₹)?
  36. 36.The price of a school bag changes from ₹3400 to ₹4080. By what percent did it go up?
  37. 37.A water tank holds 3380 litres. 15% of the water is used. How many litres are left?
  38. 38.A water tank holds 3040 litres. 5% of the water is used. How many litres are left?
  39. 39.The price of a bicycle is ₹4720. It goes up by 5%. What is the new price (in ₹)?
  40. 40.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =

Answer key

  1. 40
  2. 25
  3. 209
  4. 40
  5. 3672
  6. 3726
  7. 10
  8. 14.5
  9. 80
  10. 5166
  11. 720
  12. 47.5
  13. 21
  14. 1752
  15. 2688
  16. 500
  17. 3360
  18. 224
  19. 2016
  20. 3302
  21. 864
  22. 6636
  23. 260
  24. 57.5
  25. 1610
  26. 5
  27. 330
  28. 4396
  29. 30
  30. 3473
  31. 1440
  32. 6318
  33. 30
  34. 1540
  35. 1326
  36. 20
  37. 2873
  38. 2888
  39. 4956
  40. 37

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