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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 698 · 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.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  2. 2.A water tank holds 1420 litres. 5% of the water is used. How many litres are left?
  3. 3.The price of a bicycle is ₹1160. It goes up by 15%. What is the new price (in ₹)?
  4. 4.A water tank holds 3780 litres. 5% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹3700 to ₹5550. By what percent did it go up?
  6. 6.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  7. 7.A water tank holds 2360 litres. 5% of the water is used. How many litres are left?
  8. 8.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  9. 9.A water tank holds 1720 litres. 5% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹4980 to ₹6474. By what percent did it go up?
  11. 11.A water tank holds 4760 litres. 25% of the water is used. How many litres are left?
  12. 12.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
  13. 13.The price of a school bag changes from ₹2240 to ₹1120. By what percent did it come down?
  14. 14.A shop sells 1620 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  15. 15.A shop sells 4060 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  16. 16.A water tank holds 240 litres. 20% of the water is used. How many litres are left?
  17. 17.A water tank holds 200 litres. 30% of the water is used. How many litres are left?
  18. 18.A town has 500 people. Its population grows by 10%. How many people live there now?
  19. 19.The price of a school bag changes from ₹4520 to ₹3842. By what percent did it come down?
  20. 20.A shop sells 920 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  21. 21.A water tank holds 1460 litres. 30% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹3660 to ₹3843. By what percent did it go up?
  23. 23.The price of a bicycle is ₹3020. It goes up by 25%. What is the new price (in ₹)?
  24. 24.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  25. 25.A water tank holds 1480 litres. 10% of the water is used. How many litres are left?
  26. 26.A shop sells 940 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  27. 27.The price of a school bag changes from ₹1820 to ₹1729. By what percent did it come down?
  28. 28.A water tank holds 1920 litres. 5% of the water is used. How many litres are left?
  29. 29.A shop sells 1820 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  30. 30.A water tank holds 1940 litres. 30% of the water is used. How many litres are left?
  31. 31.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  32. 32.The price of a school bag changes from ₹2700 to ₹2835. By what percent did it go up?
  33. 33.A water tank holds 3440 litres. 5% of the water is used. How many litres are left?
  34. 34.The price of a bicycle is ₹2720. It goes up by 50%. What is the new price (in ₹)?
  35. 35.The price of a school bag changes from ₹2680 to ₹3082. By what percent did it go up?
  36. 36.The price of a school bag changes from ₹1580 to ₹1817. By what percent did it go up?
  37. 37.A water tank holds 5000 litres. 30% of the water is used. How many litres are left?
  38. 38.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  39. 39.A water tank holds 4120 litres. 5% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹1420 to ₹1278. By what percent did it come down?

Answer key

  1. 44
  2. 1349
  3. 1334
  4. 3591
  5. 50
  6. 26.5
  7. 2242
  8. 65
  9. 1634
  10. 30
  11. 3570
  12. 62.5
  13. 50
  14. 1782
  15. 4263
  16. 192
  17. 140
  18. 550
  19. 15
  20. 1058
  21. 1022
  22. 5
  23. 3775
  24. 56
  25. 1332
  26. 987
  27. 5
  28. 1824
  29. 2730
  30. 1358
  31. 72.5
  32. 5
  33. 3268
  34. 4080
  35. 15
  36. 15
  37. 3500
  38. 37.5
  39. 3914
  40. 10

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