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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 421 · 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 ₹3820 to ₹3056. By what percent did it come down?
  2. 2.The price of a school bag changes from ₹1040 to ₹1560. By what percent did it go up?
  3. 3.A town has 1560 people. Its population grows by 40%. How many people live there now?
  4. 4.The price of a school bag changes from ₹2680 to ₹2948. By what percent did it go up?
  5. 5.The price of a school bag changes from ₹2780 to ₹3197. By what percent did it go up?
  6. 6.A water tank holds 3180 litres. 25% of the water is used. How many litres are left?
  7. 7.A water tank holds 4700 litres. 5% of the water is used. How many litres are left?
  8. 8.A price comes down by 10% 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 ₹4640 to ₹6032. By what percent did it go up?
  10. 10.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  11. 11.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  12. 12.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  13. 13.A water tank holds 600 litres. 30% of the water is used. How many litres are left?
  14. 14.The price of a bicycle is ₹1140. It goes up by 5%. What is the new price (in ₹)?
  15. 15.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  16. 16.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  17. 17.A water tank holds 1780 litres. 20% of the water is used. How many litres are left?
  18. 18.A water tank holds 800 litres. 30% of the water is used. How many litres are left?
  19. 19.The price of a bicycle is ₹1800. It goes up by 15%. What is the new price (in ₹)?
  20. 20.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  21. 21.A shop sells 1720 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  22. 22.The price of a bicycle is ₹1080. It goes up by 20%. What is the new price (in ₹)?
  23. 23.The price of a school bag changes from ₹1740 to ₹1479. By what percent did it come down?
  24. 24.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  25. 25.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  26. 26.A water tank holds 800 litres. 50% of the water is used. How many litres are left?
  27. 27.A water tank holds 4280 litres. 15% of the water is used. How many litres are left?
  28. 28.A water tank holds 2720 litres. 30% of the water is used. How many litres are left?
  29. 29.The price of a bicycle is ₹1860. It goes up by 30%. What is the new price (in ₹)?
  30. 30.A water tank holds 4420 litres. 5% of the water is used. How many litres are left?
  31. 31.The price of a school bag changes from ₹1640 to ₹2296. By what percent did it go up?
  32. 32.A water tank holds 2100 litres. 15% of the water is used. How many litres are left?
  33. 33.A water tank holds 1520 litres. 40% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹3540 to ₹2124. By what percent did it come down?
  35. 35.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  36. 36.The price of a school bag changes from ₹2220 to ₹2553. By what percent did it go up?
  37. 37.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  38. 38.The price of a school bag changes from ₹2520 to ₹2268. By what percent did it come down?
  39. 39.A water tank holds 4240 litres. 25% of the water is used. How many litres are left?
  40. 40.A water tank holds 60 litres. 20% of the water is used. How many litres are left?

Answer key

  1. 20
  2. 50
  3. 2184
  4. 10
  5. 15
  6. 2385
  7. 4465
  8. 28
  9. 30
  10. 4.5
  11. 10.25
  12. 28.75
  13. 420
  14. 1197
  15. 43.75
  16. 14.5
  17. 1424
  18. 560
  19. 2070
  20. 50
  21. 2236
  22. 1296
  23. 15
  24. 80
  25. 26
  26. 400
  27. 3638
  28. 1904
  29. 2418
  30. 4199
  31. 40
  32. 1785
  33. 912
  34. 40
  35. 52.5
  36. 15
  37. 36.25
  38. 10
  39. 3180
  40. 48

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