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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 346 · 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 40% and then goes up by 5% more. By what percent has it gone up in all? =
  2. 2.The price of a bicycle is ₹4300. It goes up by 20%. What is the new price (in ₹)?
  3. 3.A water tank holds 2480 litres. 15% of the water is used. How many litres are left?
  4. 4.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  5. 5.The price of a school bag changes from ₹2300 to ₹2070. By what percent did it come down?
  6. 6.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
  7. 7.The price of a bicycle is ₹1860. It goes up by 50%. What is the new price (in ₹)?
  8. 8.The price of a bicycle is ₹2300. It goes up by 10%. What is the new price (in ₹)?
  9. 9.A town has 1900 people. Its population grows by 20%. How many people live there now?
  10. 10.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  11. 11.The price of a bicycle is ₹1360. It goes up by 10%. What is the new price (in ₹)?
  12. 12.The price of a school bag changes from ₹4340 to ₹3255. By what percent did it come down?
  13. 13.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  14. 14.The price of a school bag changes from ₹2440 to ₹2196. By what percent did it come down?
  15. 15.A water tank holds 4360 litres. 5% of the water is used. How many litres are left?
  16. 16.A town has 1920 people. Its population grows by 40%. How many people live there now?
  17. 17.The price of a school bag changes from ₹1400 to ₹1610. By what percent did it go up?
  18. 18.A shop sells 2680 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  19. 19.A water tank holds 880 litres. 50% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹760 to ₹874. By what percent did it go up?
  21. 21.A town has 780 people. Its population grows by 40%. How many people live there now?
  22. 22.A water tank holds 80 litres. 30% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹3920 to ₹5096. By what percent did it go up?
  24. 24.A town has 260 people. Its population grows by 30%. How many people live there now?
  25. 25.A water tank holds 4860 litres. 10% of the water is used. How many litres are left?
  26. 26.A town has 1600 people. Its population grows by 30%. How many people live there now?
  27. 27.A town has 320 people. Its population grows by 10%. How many people live there now?
  28. 28.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
  29. 29.A price comes down by 25% and then comes down by 25% more. By what percent has it come down in all? =
  30. 30.A town has 1580 people. Its population grows by 40%. How many people live there now?
  31. 31.A water tank holds 1500 litres. 15% of the water is used. How many litres are left?
  32. 32.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  33. 33.A town has 1420 people. Its population grows by 5%. How many people live there now?
  34. 34.A water tank holds 2040 litres. 15% of the water is used. How many litres are left?
  35. 35.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  36. 36.A town has 580 people. Its population grows by 40%. How many people live there now?
  37. 37.A shop sells 2280 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  38. 38.A water tank holds 1520 litres. 10% of the water is used. How many litres are left?
  39. 39.A town has 4420 people. Its population grows by 30%. How many people live there now?
  40. 40.The price of a school bag changes from ₹1100 to ₹825. By what percent did it come down?

Answer key

  1. 47
  2. 5160
  3. 2108
  4. 52
  5. 10
  6. 32
  7. 2790
  8. 2530
  9. 2280
  10. 26
  11. 1496
  12. 25
  13. 52
  14. 10
  15. 4142
  16. 2688
  17. 15
  18. 3752
  19. 440
  20. 15
  21. 1092
  22. 56
  23. 30
  24. 338
  25. 4374
  26. 2080
  27. 352
  28. 19
  29. 43.75
  30. 2212
  31. 1275
  32. 56
  33. 1491
  34. 1734
  35. 21
  36. 812
  37. 2508
  38. 1368
  39. 5746
  40. 25

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