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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 283 · 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 ₹1700 to ₹1615. By what percent did it come down?
  2. 2.The price of a school bag changes from ₹3680 to ₹4232. By what percent did it go up?
  3. 3.A town has 4680 people. Its population grows by 25%. How many people live there now?
  4. 4.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  5. 5.The price of a school bag changes from ₹1300 to ₹1950. By what percent did it go up?
  6. 6.A water tank holds 4020 litres. 40% of the water is used. How many litres are left?
  7. 7.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  8. 8.A water tank holds 460 litres. 10% of the water is used. How many litres are left?
  9. 9.A shop sells 1420 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  10. 10.A water tank holds 4200 litres. 5% of the water is used. How many litres are left?
  11. 11.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  12. 12.A water tank holds 4500 litres. 30% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹260 to ₹130. By what percent did it come down?
  14. 14.A shop sells 3240 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  15. 15.A water tank holds 4100 litres. 25% of the water is used. How many litres are left?
  16. 16.A town has 2600 people. Its population grows by 20%. How many people live there now?
  17. 17.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
  18. 18.A water tank holds 3440 litres. 15% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹3680 to ₹3128. By what percent did it come down?
  20. 20.A price comes down by 30% and then comes down by 30% more. By what percent has it come down in all? =
  21. 21.A water tank holds 4800 litres. 10% of the water is used. How many litres are left?
  22. 22.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  23. 23.A town has 4040 people. Its population grows by 50%. How many people live there now?
  24. 24.The price of a school bag changes from ₹4260 to ₹3834. By what percent did it come down?
  25. 25.A town has 520 people. Its population grows by 5%. How many people live there now?
  26. 26.A shop sells 420 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  27. 27.A town has 560 people. Its population grows by 20%. How many people live there now?
  28. 28.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  29. 29.A shop sells 380 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  30. 30.A shop sells 2880 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  31. 31.The price of a bicycle is ₹1040. It goes up by 5%. What is the new price (in ₹)?
  32. 32.The price of a school bag changes from ₹4660 to ₹5592. By what percent did it go up?
  33. 33.A water tank holds 140 litres. 10% of the water is used. How many litres are left?
  34. 34.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  35. 35.The price of a school bag changes from ₹2880 to ₹2304. By what percent did it come down?
  36. 36.A shop sells 2740 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  37. 37.The price of a school bag changes from ₹260 to ₹221. By what percent did it come down?
  38. 38.The price of a school bag changes from ₹2540 to ₹3556. By what percent did it go up?
  39. 39.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  40. 40.The price of a school bag changes from ₹3940 to ₹2758. By what percent did it come down?

Answer key

  1. 5
  2. 15
  3. 5850
  4. 65
  5. 50
  6. 2412
  7. 36.5
  8. 414
  9. 1633
  10. 3990
  11. 32
  12. 3150
  13. 50
  14. 4536
  15. 3075
  16. 3120
  17. 64
  18. 2924
  19. 15
  20. 51
  21. 4320
  22. 57.5
  23. 6060
  24. 10
  25. 546
  26. 441
  27. 672
  28. 55
  29. 494
  30. 3600
  31. 1092
  32. 20
  33. 126
  34. 26
  35. 20
  36. 3562
  37. 15
  38. 40
  39. 87.5
  40. 30

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