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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 762 · 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 ₹3960 to ₹2376. By what percent did it come down?
  2. 2.The price of a school bag changes from ₹2260 to ₹1356. By what percent did it come down?
  3. 3.The price of a school bag changes from ₹1180 to ₹708. By what percent did it come down?
  4. 4.A water tank holds 3880 litres. 5% of the water is used. How many litres are left?
  5. 5.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  6. 6.The price of a school bag changes from ₹580 to ₹696. By what percent did it go up?
  7. 7.A water tank holds 3700 litres. 15% of the water is used. How many litres are left?
  8. 8.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  9. 9.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  10. 10.A shop sells 2620 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  11. 11.A shop sells 1580 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  12. 12.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  13. 13.The price of a school bag changes from ₹3420 to ₹3933. By what percent did it go up?
  14. 14.The price of a bicycle is ₹4380. It goes up by 40%. What is the new price (in ₹)?
  15. 15.A shop sells 3280 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  16. 16.A water tank holds 1320 litres. 5% of the water is used. How many litres are left?
  17. 17.A town has 1940 people. Its population grows by 25%. How many people live there now?
  18. 18.A town has 3700 people. Its population grows by 5%. How many people live there now?
  19. 19.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  20. 20.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
  21. 21.A water tank holds 3060 litres. 15% of the water is used. How many litres are left?
  22. 22.A town has 2920 people. Its population grows by 15%. How many people live there now?
  23. 23.The price of a school bag changes from ₹3240 to ₹1620. By what percent did it come down?
  24. 24.A town has 4220 people. Its population grows by 30%. How many people live there now?
  25. 25.A water tank holds 560 litres. 40% of the water is used. How many litres are left?
  26. 26.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  27. 27.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  28. 28.A water tank holds 3000 litres. 15% of the water is used. How many litres are left?
  29. 29.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  30. 30.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  31. 31.The price of a school bag changes from ₹300 to ₹345. By what percent did it go up?
  32. 32.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  33. 33.A shop sells 1740 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  34. 34.The price of a bicycle is ₹3600. It goes up by 50%. What is the new price (in ₹)?
  35. 35.The price of a bicycle is ₹4340. It goes up by 15%. What is the new price (in ₹)?
  36. 36.A town has 700 people. Its population grows by 25%. How many people live there now?
  37. 37.The price of a bicycle is ₹4080. It goes up by 5%. What is the new price (in ₹)?
  38. 38.The price of a school bag changes from ₹1320 to ₹1980. By what percent did it go up?
  39. 39.The price of a school bag changes from ₹480 to ₹288. By what percent did it come down?
  40. 40.A water tank holds 1380 litres. 20% of the water is used. How many litres are left?

Answer key

  1. 40
  2. 40
  3. 40
  4. 3686
  5. 28.75
  6. 20
  7. 3145
  8. 72.5
  9. 56
  10. 2882
  11. 2212
  12. 43
  13. 15
  14. 6132
  15. 3936
  16. 1254
  17. 2425
  18. 3885
  19. 33.5
  20. 42.5
  21. 2601
  22. 3358
  23. 50
  24. 5486
  25. 336
  26. 37
  27. 14.5
  28. 2550
  29. 32.5
  30. 20.75
  31. 15
  32. 95
  33. 2088
  34. 5400
  35. 4991
  36. 875
  37. 4284
  38. 50
  39. 40
  40. 1104

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