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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 349 · 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 bicycle is ₹2340. It goes up by 5%. What is the new price (in ₹)?
  2. 2.A shop sells 2740 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 30% and then goes up by 30% more. By what percent has it gone up in all? =
  4. 4.A water tank holds 180 litres. 40% of the water is used. How many litres are left?
  5. 5.A shop sells 2200 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  6. 6.A water tank holds 3380 litres. 15% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹3840 to ₹4416. By what percent did it go up?
  8. 8.The price of a bicycle is ₹4060. It goes up by 50%. What is the new price (in ₹)?
  9. 9.A water tank holds 3940 litres. 15% of the water is used. How many litres are left?
  10. 10.The price of a bicycle is ₹3260. It goes up by 25%. What is the new price (in ₹)?
  11. 11.A water tank holds 2100 litres. 40% of the water is used. How many litres are left?
  12. 12.A water tank holds 780 litres. 30% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹4420 to ₹3536. By what percent did it come down?
  14. 14.A water tank holds 4040 litres. 25% of the water is used. How many litres are left?
  15. 15.A town has 3440 people. Its population grows by 5%. How many people live there now?
  16. 16.A water tank holds 3620 litres. 15% of the water is used. How many litres are left?
  17. 17.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  18. 18.A water tank holds 280 litres. 40% of the water is used. How many litres are left?
  19. 19.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  20. 20.A water tank holds 3720 litres. 40% of the water is used. How many litres are left?
  21. 21.A water tank holds 100 litres. 25% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹1940 to ₹1552. By what percent did it come down?
  23. 23.A water tank holds 4400 litres. 10% of the water is used. How many litres are left?
  24. 24.A town has 2480 people. Its population grows by 20%. How many people live there now?
  25. 25.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹4780 to ₹3824. By what percent did it come down?
  27. 27.The price of a school bag changes from ₹1180 to ₹944. By what percent did it come down?
  28. 28.A water tank holds 2940 litres. 25% of the water is used. How many litres are left?
  29. 29.A water tank holds 3560 litres. 25% of the water is used. How many litres are left?
  30. 30.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  31. 31.A town has 2780 people. Its population grows by 30%. How many people live there now?
  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 school bag changes from ₹2760 to ₹3450. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹4280 to ₹3210. By what percent did it come down?
  35. 35.A water tank holds 1080 litres. 40% of the water is used. How many litres are left?
  36. 36.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  37. 37.A water tank holds 3480 litres. 5% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹2320 to ₹1856. By what percent did it come down?
  39. 39.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  40. 40.The price of a bicycle is ₹1900. It goes up by 40%. What is the new price (in ₹)?

Answer key

  1. 2457
  2. 3562
  3. 69
  4. 108
  5. 2310
  6. 2873
  7. 15
  8. 6090
  9. 3349
  10. 4075
  11. 1260
  12. 546
  13. 20
  14. 3030
  15. 3612
  16. 3077
  17. 33
  18. 168
  19. 54
  20. 2232
  21. 75
  22. 20
  23. 3960
  24. 2976
  25. 82
  26. 20
  27. 20
  28. 2205
  29. 2670
  30. 37.5
  31. 3614
  32. 52
  33. 25
  34. 25
  35. 648
  36. 4.5
  37. 3306
  38. 20
  39. 15.5
  40. 2660

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