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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 960 · 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 ₹4660 to ₹6990. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹80 to ₹72. By what percent did it come down?
  3. 3.A town has 4660 people. Its population grows by 10%. How many people live there now?
  4. 4.A water tank holds 280 litres. 5% of the water is used. How many litres are left?
  5. 5.A water tank holds 4680 litres. 25% of the water is used. How many litres are left?
  6. 6.The price of a school bag changes from ₹180 to ₹225. By what percent did it go up?
  7. 7.A town has 540 people. Its population grows by 15%. How many people live there now?
  8. 8.The price of a bicycle is ₹680. It goes up by 15%. What is the new price (in ₹)?
  9. 9.The price of a school bag changes from ₹4800 to ₹5280. By what percent did it go up?
  10. 10.A town has 3360 people. Its population grows by 25%. How many people live there now?
  11. 11.A water tank holds 2320 litres. 50% of the water is used. How many litres are left?
  12. 12.A water tank holds 3820 litres. 10% of the water is used. How many litres are left?
  13. 13.A shop sells 960 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  14. 14.A shop sells 2180 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  15. 15.The price of a school bag changes from ₹4840 to ₹4114. By what percent did it come down?
  16. 16.A shop sells 1860 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  17. 17.A town has 1240 people. Its population grows by 15%. How many people live there now?
  18. 18.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  19. 19.The price of a school bag changes from ₹2400 to ₹1680. By what percent did it come down?
  20. 20.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  21. 21.A water tank holds 1560 litres. 25% of the water is used. How many litres are left?
  22. 22.A water tank holds 4100 litres. 40% of the water is used. How many litres are left?
  23. 23.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  24. 24.A water tank holds 4600 litres. 30% of the water is used. How many litres are left?
  25. 25.A shop sells 760 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  26. 26.The price of a school bag changes from ₹120 to ₹60. By what percent did it come down?
  27. 27.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  28. 28.A shop sells 400 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  29. 29.A town has 4640 people. Its population grows by 10%. How many people live there now?
  30. 30.A shop sells 2020 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  31. 31.A water tank holds 680 litres. 15% of the water is used. How many litres are left?
  32. 32.The price of a bicycle is ₹4280. It goes up by 25%. What is the new price (in ₹)?
  33. 33.The price of a school bag changes from ₹2040 to ₹2448. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹2600 to ₹2990. By what percent did it go up?
  35. 35.A shop sells 4560 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  36. 36.The price of a school bag changes from ₹1760 to ₹2640. By what percent did it go up?
  37. 37.A shop sells 1520 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  38. 38.A shop sells 3200 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  39. 39.A water tank holds 600 litres. 25% of the water is used. How many litres are left?
  40. 40.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =

Answer key

  1. 50
  2. 10
  3. 5126
  4. 266
  5. 3510
  6. 25
  7. 621
  8. 782
  9. 10
  10. 4200
  11. 1160
  12. 3438
  13. 1056
  14. 3052
  15. 15
  16. 2046
  17. 1426
  18. 46
  19. 30
  20. 60
  21. 1170
  22. 2460
  23. 43
  24. 3220
  25. 836
  26. 50
  27. 61
  28. 440
  29. 5104
  30. 2626
  31. 578
  32. 5350
  33. 20
  34. 15
  35. 6384
  36. 50
  37. 1596
  38. 4800
  39. 450
  40. 15.5

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