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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 867 · 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 ₹1440 to ₹1152. By what percent did it come down?
  2. 2.A water tank holds 1940 litres. 20% of the water is used. How many litres are left?
  3. 3.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  4. 4.A shop sells 2360 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  5. 5.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  6. 6.A water tank holds 1860 litres. 10% of the water is used. How many litres are left?
  7. 7.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  8. 8.A shop sells 840 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  9. 9.A water tank holds 3900 litres. 50% of the water is used. How many litres are left?
  10. 10.A water tank holds 1720 litres. 10% of the water is used. How many litres are left?
  11. 11.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  12. 12.A water tank holds 3720 litres. 5% of the water is used. How many litres are left?
  13. 13.A shop sells 860 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  14. 14.A water tank holds 4480 litres. 5% of the water is used. How many litres are left?
  15. 15.The price of a bicycle is ₹2600. It goes up by 10%. What is the new price (in ₹)?
  16. 16.A shop sells 3980 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  17. 17.The price of a school bag changes from ₹1100 to ₹1375. By what percent did it go up?
  18. 18.A town has 480 people. Its population grows by 10%. How many people live there now?
  19. 19.The price of a school bag changes from ₹3560 to ₹3382. By what percent did it come down?
  20. 20.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  21. 21.A shop sells 2080 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  22. 22.A water tank holds 5000 litres. 10% of the water is used. How many litres are left?
  23. 23.A water tank holds 3360 litres. 5% of the water is used. How many litres are left?
  24. 24.A water tank holds 2980 litres. 5% of the water is used. How many litres are left?
  25. 25.A shop sells 640 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  26. 26.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  27. 27.A shop sells 1540 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  28. 28.A water tank holds 2760 litres. 15% of the water is used. How many litres are left?
  29. 29.A water tank holds 1720 litres. 15% of the water is used. How many litres are left?
  30. 30.A water tank holds 2520 litres. 40% of the water is used. How many litres are left?
  31. 31.The price of a school bag changes from ₹3440 to ₹4472. By what percent did it go up?
  32. 32.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =
  33. 33.The price of a school bag changes from ₹3340 to ₹3674. By what percent did it go up?
  34. 34.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  35. 35.The price of a bicycle is ₹4820. It goes up by 20%. What is the new price (in ₹)?
  36. 36.The price of a school bag changes from ₹4880 to ₹5856. By what percent did it go up?
  37. 37.A town has 3980 people. Its population grows by 20%. How many people live there now?
  38. 38.A shop sells 560 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  39. 39.A water tank holds 3800 litres. 30% of the water is used. How many litres are left?
  40. 40.The price of a bicycle is ₹4500. It goes up by 5%. What is the new price (in ₹)?

Answer key

  1. 20
  2. 1552
  3. 72.5
  4. 2596
  5. 27.75
  6. 1674
  7. 35
  8. 924
  9. 1950
  10. 1548
  11. 33.5
  12. 3534
  13. 946
  14. 4256
  15. 2860
  16. 4179
  17. 25
  18. 528
  19. 5
  20. 43
  21. 2392
  22. 4500
  23. 3192
  24. 2831
  25. 672
  26. 17
  27. 2310
  28. 2346
  29. 1462
  30. 1512
  31. 30
  32. 60
  33. 10
  34. 60
  35. 5784
  36. 20
  37. 4776
  38. 588
  39. 2660
  40. 4725

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