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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 370 · 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 goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  2. 2.The price of a bicycle is ₹4620. It goes up by 5%. What is the new price (in ₹)?
  3. 3.A water tank holds 1300 litres. 25% of the water is used. How many litres are left?
  4. 4.A town has 1820 people. Its population grows by 5%. How many people live there now?
  5. 5.A water tank holds 4820 litres. 10% of the water is used. How many litres are left?
  6. 6.The price of a bicycle is ₹1260. It goes up by 10%. What is the new price (in ₹)?
  7. 7.The price of a school bag changes from ₹3240 to ₹3726. By what percent did it go up?
  8. 8.The price of a school bag changes from ₹980 to ₹490. By what percent did it come down?
  9. 9.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  10. 10.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  11. 11.The price of a bicycle is ₹3060. It goes up by 15%. What is the new price (in ₹)?
  12. 12.A water tank holds 4400 litres. 30% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹3480 to ₹2610. By what percent did it come down?
  14. 14.A shop sells 920 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  15. 15.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
  16. 16.A shop sells 2400 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  17. 17.The price of a school bag changes from ₹980 to ₹1078. By what percent did it go up?
  18. 18.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  19. 19.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
  20. 20.The price of a school bag changes from ₹400 to ₹200. By what percent did it come down?
  21. 21.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  22. 22.A town has 380 people. Its population grows by 25%. How many people live there now?
  23. 23.A water tank holds 4580 litres. 20% of the water is used. How many litres are left?
  24. 24.A shop sells 2220 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  25. 25.A water tank holds 2280 litres. 10% of the water is used. How many litres are left?
  26. 26.The price of a school bag changes from ₹1400 to ₹1750. By what percent did it go up?
  27. 27.A shop sells 1440 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  28. 28.The price of a school bag changes from ₹1740 to ₹1305. By what percent did it come down?
  29. 29.A town has 1180 people. Its population grows by 40%. How many people live there now?
  30. 30.The price of a school bag changes from ₹1140 to ₹1710. By what percent did it go up?
  31. 31.A shop sells 3200 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  32. 32.The price of a bicycle is ₹2540. It goes up by 5%. What is the new price (in ₹)?
  33. 33.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  34. 34.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  35. 35.A water tank holds 3620 litres. 5% of the water is used. How many litres are left?
  36. 36.A price goes up by 50% and then comes down by 30%. By what percent has it gone up in all? =
  37. 37.The price of a bicycle is ₹2580. It goes up by 50%. What is the new price (in ₹)?
  38. 38.A shop sells 4620 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  39. 39.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  40. 40.A water tank holds 1860 litres. 15% of the water is used. How many litres are left?

Answer key

  1. 23.5
  2. 4851
  3. 975
  4. 1911
  5. 4338
  6. 1386
  7. 15
  8. 50
  9. 19
  10. 36.5
  11. 3519
  12. 3080
  13. 25
  14. 1012
  15. 69
  16. 3120
  17. 10
  18. 28
  19. 38
  20. 50
  21. 32.5
  22. 475
  23. 3664
  24. 2553
  25. 2052
  26. 25
  27. 1512
  28. 25
  29. 1652
  30. 50
  31. 4480
  32. 2667
  33. 28.75
  34. 56.25
  35. 3439
  36. 5
  37. 3870
  38. 6930
  39. 19.25
  40. 1581

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