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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 367 · 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 ₹660. It goes up by 50%. What is the new price (in ₹)?
  2. 2.The price of a bicycle is ₹1920. It goes up by 25%. What is the new price (in ₹)?
  3. 3.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  4. 4.The price of a school bag changes from ₹4040 to ₹3434. By what percent did it come down?
  5. 5.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  6. 6.A town has 760 people. Its population grows by 20%. How many people live there now?
  7. 7.The price of a school bag changes from ₹4720 to ₹3540. By what percent did it come down?
  8. 8.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  9. 9.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  10. 10.A water tank holds 4840 litres. 15% of the water is used. How many litres are left?
  11. 11.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  12. 12.The price of a school bag changes from ₹640 to ₹960. By what percent did it go up?
  13. 13.The price of a school bag changes from ₹4380 to ₹3723. By what percent did it come down?
  14. 14.A water tank holds 3280 litres. 40% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹1160 to ₹1044. By what percent did it come down?
  16. 16.The price of a school bag changes from ₹1380 to ₹1173. By what percent did it come down?
  17. 17.A water tank holds 240 litres. 30% of the water is used. How many litres are left?
  18. 18.A shop sells 4760 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  19. 19.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  20. 20.A water tank holds 1960 litres. 5% of the water is used. How many litres are left?
  21. 21.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
  22. 22.The price of a school bag changes from ₹3020 to ₹3926. By what percent did it go up?
  23. 23.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
  24. 24.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  25. 25.A water tank holds 260 litres. 40% of the water is used. How many litres are left?
  26. 26.A shop sells 1400 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  27. 27.The price of a school bag changes from ₹3480 to ₹4350. By what percent did it go up?
  28. 28.A shop sells 4480 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  29. 29.The price of a bicycle is ₹240. It goes up by 15%. What is the new price (in ₹)?
  30. 30.A shop sells 2820 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  31. 31.A shop sells 960 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  32. 32.A water tank holds 3700 litres. 5% of the water is used. How many litres are left?
  33. 33.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  34. 34.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  35. 35.A shop sells 4840 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  36. 36.A water tank holds 780 litres. 5% of the water is used. How many litres are left?
  37. 37.The price of a bicycle is ₹3900. It goes up by 20%. What is the new price (in ₹)?
  38. 38.A water tank holds 3180 litres. 30% of the water is used. How many litres are left?
  39. 39.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  40. 40.A shop sells 2940 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?

Answer key

  1. 990
  2. 2400
  3. 26
  4. 15
  5. 55
  6. 912
  7. 25
  8. 75
  9. 15.5
  10. 4114
  11. 3.5
  12. 50
  13. 15
  14. 1968
  15. 10
  16. 15
  17. 168
  18. 6664
  19. 87.5
  20. 1862
  21. 64
  22. 30
  23. 44
  24. 20.75
  25. 156
  26. 1540
  27. 25
  28. 6272
  29. 276
  30. 3102
  31. 1248
  32. 3515
  33. 52.5
  34. 40.5
  35. 6776
  36. 741
  37. 4680
  38. 2226
  39. 54
  40. 3822

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