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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 168 · 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 bicycle is ₹1500. It goes up by 30%. What is the new price (in ₹)?
  2. 2.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  3. 3.The price of a school bag changes from ₹800 to ₹880. By what percent did it go up?
  4. 4.A shop sells 920 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  5. 5.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
  6. 6.A water tank holds 600 litres. 50% of the water is used. How many litres are left?
  7. 7.The price of a bicycle is ₹1460. It goes up by 10%. What is the new price (in ₹)?
  8. 8.A town has 3960 people. Its population grows by 30%. How many people live there now?
  9. 9.A water tank holds 3620 litres. 10% of the water is used. How many litres are left?
  10. 10.A water tank holds 3740 litres. 5% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹800 to ₹400. By what percent did it come down?
  12. 12.The price of a school bag changes from ₹2160 to ₹1080. By what percent did it come down?
  13. 13.A water tank holds 4900 litres. 15% of the water is used. How many litres are left?
  14. 14.A water tank holds 3540 litres. 30% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹280 to ₹308. By what percent did it go up?
  16. 16.A town has 1500 people. Its population grows by 25%. How many people live there now?
  17. 17.A water tank holds 3220 litres. 30% of the water is used. How many litres are left?
  18. 18.The price of a bicycle is ₹4560. It goes up by 30%. What is the new price (in ₹)?
  19. 19.A water tank holds 2680 litres. 25% of the water is used. How many litres are left?
  20. 20.A shop sells 3580 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 4720 litres. 10% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹2420 to ₹2057. By what percent did it come down?
  23. 23.A water tank holds 3860 litres. 5% of the water is used. How many litres are left?
  24. 24.A water tank holds 4320 litres. 25% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹3380. It goes up by 5%. What is the new price (in ₹)?
  26. 26.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
  27. 27.A town has 1780 people. Its population grows by 40%. How many people live there now?
  28. 28.The price of a bicycle is ₹2740. It goes up by 50%. What is the new price (in ₹)?
  29. 29.A water tank holds 1840 litres. 30% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹1860 to ₹1953. By what percent did it go up?
  31. 31.A water tank holds 4280 litres. 10% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹1720 to ₹1978. By what percent did it go up?
  33. 33.A town has 2120 people. Its population grows by 5%. How many people live there now?
  34. 34.The price of a school bag changes from ₹2340 to ₹2574. By what percent did it go up?
  35. 35.The price of a school bag changes from ₹3840 to ₹4224. By what percent did it go up?
  36. 36.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =
  37. 37.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  38. 38.A water tank holds 2200 litres. 50% of the water is used. How many litres are left?
  39. 39.A water tank holds 1500 litres. 25% of the water is used. How many litres are left?
  40. 40.The price of a bicycle is ₹3060. It goes up by 10%. What is the new price (in ₹)?

Answer key

  1. 1950
  2. 43.75
  3. 10
  4. 1104
  5. 82
  6. 300
  7. 1606
  8. 5148
  9. 3258
  10. 3553
  11. 50
  12. 50
  13. 4165
  14. 2478
  15. 10
  16. 1875
  17. 2254
  18. 5928
  19. 2010
  20. 4117
  21. 4248
  22. 15
  23. 3667
  24. 3240
  25. 3549
  26. 18.75
  27. 2492
  28. 4110
  29. 1288
  30. 5
  31. 3852
  32. 15
  33. 2226
  34. 10
  35. 10
  36. 60
  37. 54
  38. 1100
  39. 1125
  40. 3366

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