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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 859 · 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 5% and then goes up by 10% more. By what percent has it gone up in all? =
  2. 2.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  3. 3.The price of a school bag changes from ₹3820 to ₹4011. By what percent did it go up?
  4. 4.A town has 3960 people. Its population grows by 40%. How many people live there now?
  5. 5.A water tank holds 4560 litres. 10% of the water is used. How many litres are left?
  6. 6.A shop sells 4380 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  7. 7.A water tank holds 4460 litres. 10% of the water is used. How many litres are left?
  8. 8.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
  9. 9.The price of a school bag changes from ₹400 to ₹600. By what percent did it go up?
  10. 10.A shop sells 3600 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  11. 11.The price of a school bag changes from ₹2260 to ₹2147. By what percent did it come down?
  12. 12.A water tank holds 440 litres. 40% of the water is used. How many litres are left?
  13. 13.A water tank holds 2980 litres. 20% of the water is used. How many litres are left?
  14. 14.A water tank holds 680 litres. 15% of the water is used. How many litres are left?
  15. 15.A shop sells 3820 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  16. 16.A water tank holds 1500 litres. 10% of the water is used. How many litres are left?
  17. 17.A water tank holds 3340 litres. 10% of the water is used. How many litres are left?
  18. 18.A town has 3920 people. Its population grows by 15%. How many people live there now?
  19. 19.The price of a school bag changes from ₹720 to ₹540. By what percent did it come down?
  20. 20.A town has 120 people. Its population grows by 40%. How many people live there now?
  21. 21.A water tank holds 3500 litres. 20% of the water is used. How many litres are left?
  22. 22.A shop sells 1940 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  23. 23.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =
  24. 24.The price of a school bag changes from ₹2920 to ₹4380. By what percent did it go up?
  25. 25.The price of a school bag changes from ₹3880 to ₹3686. By what percent did it come down?
  26. 26.The price of a school bag changes from ₹4840 to ₹6292. By what percent did it go up?
  27. 27.The price of a bicycle is ₹1640. It goes up by 10%. What is the new price (in ₹)?
  28. 28.A water tank holds 2680 litres. 30% of the water is used. How many litres are left?
  29. 29.A water tank holds 740 litres. 5% of the water is used. How many litres are left?
  30. 30.A water tank holds 1000 litres. 10% of the water is used. How many litres are left?
  31. 31.A water tank holds 2260 litres. 10% of the water is used. How many litres are left?
  32. 32.The price of a bicycle is ₹1560. It goes up by 10%. What is the new price (in ₹)?
  33. 33.A water tank holds 1700 litres. 20% of the water is used. How many litres are left?
  34. 34.The price of a bicycle is ₹1240. It goes up by 30%. What is the new price (in ₹)?
  35. 35.A water tank holds 1880 litres. 10% of the water is used. How many litres are left?
  36. 36.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  37. 37.A town has 2520 people. Its population grows by 30%. How many people live there now?
  38. 38.The price of a bicycle is ₹4140. It goes up by 15%. What is the new price (in ₹)?
  39. 39.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  40. 40.The price of a school bag changes from ₹2500 to ₹2125. By what percent did it come down?

Answer key

  1. 15.5
  2. 36.5
  3. 5
  4. 5544
  5. 4104
  6. 5694
  7. 4014
  8. 24
  9. 50
  10. 4320
  11. 5
  12. 264
  13. 2384
  14. 578
  15. 4775
  16. 1350
  17. 3006
  18. 4508
  19. 25
  20. 168
  21. 2800
  22. 2037
  23. 36.25
  24. 50
  25. 5
  26. 30
  27. 1804
  28. 1876
  29. 703
  30. 900
  31. 2034
  32. 1716
  33. 1360
  34. 1612
  35. 1692
  36. 17
  37. 3276
  38. 4761
  39. 57.5
  40. 15

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