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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 162 · 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 ₹2240. It goes up by 40%. What is the new price (in ₹)?
  2. 2.The price of a bicycle is ₹1000. It goes up by 15%. What is the new price (in ₹)?
  3. 3.The price of a bicycle is ₹1840. It goes up by 20%. What is the new price (in ₹)?
  4. 4.A shop sells 1180 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  5. 5.A water tank holds 4740 litres. 20% of the water is used. How many litres are left?
  6. 6.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  7. 7.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
  8. 8.The price of a bicycle is ₹3740. It goes up by 5%. What is the new price (in ₹)?
  9. 9.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  10. 10.The price of a school bag changes from ₹4860 to ₹4617. By what percent did it come down?
  11. 11.A town has 4580 people. Its population grows by 40%. How many people live there now?
  12. 12.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  13. 13.A price comes down by 20% and then comes down by 10% more. By what percent has it come down in all? =
  14. 14.The price of a school bag changes from ₹3920 to ₹4508. By what percent did it go up?
  15. 15.The price of a school bag changes from ₹1880 to ₹2350. By what percent did it go up?
  16. 16.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  17. 17.The price of a school bag changes from ₹2140 to ₹1926. By what percent did it come down?
  18. 18.A water tank holds 3480 litres. 10% of the water is used. How many litres are left?
  19. 19.The price of a bicycle is ₹3680. It goes up by 25%. What is the new price (in ₹)?
  20. 20.A shop sells 360 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  21. 21.A water tank holds 4140 litres. 30% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹4380 to ₹3504. By what percent did it come down?
  23. 23.The price of a school bag changes from ₹120 to ₹126. By what percent did it go up?
  24. 24.The price of a bicycle is ₹1000. It goes up by 40%. What is the new price (in ₹)?
  25. 25.The price of a bicycle is ₹2280. It goes up by 5%. What is the new price (in ₹)?
  26. 26.The price of a bicycle is ₹300. It goes up by 15%. What is the new price (in ₹)?
  27. 27.A price goes up by 20% and then goes up by 25% more. By what percent has it gone up in all? =
  28. 28.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
  29. 29.A water tank holds 1600 litres. 30% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹1720 to ₹2064. By what percent did it go up?
  31. 31.A shop sells 2100 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  32. 32.A town has 1180 people. Its population grows by 5%. How many people live there now?
  33. 33.The price of a school bag changes from ₹160 to ₹152. By what percent did it come down?
  34. 34.The price of a school bag changes from ₹4440 to ₹5106. By what percent did it go up?
  35. 35.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  36. 36.A water tank holds 1580 litres. 25% of the water is used. How many litres are left?
  37. 37.A shop sells 4480 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  38. 38.A shop sells 420 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  39. 39.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  40. 40.A water tank holds 2140 litres. 30% of the water is used. How many litres are left?

Answer key

  1. 3136
  2. 1150
  3. 2208
  4. 1416
  5. 3792
  6. 31.25
  7. 37
  8. 3927
  9. 12
  10. 5
  11. 6412
  12. 58
  13. 28
  14. 15
  15. 25
  16. 15.5
  17. 10
  18. 3132
  19. 4600
  20. 378
  21. 2898
  22. 20
  23. 5
  24. 1400
  25. 2394
  26. 345
  27. 50
  28. 58
  29. 1120
  30. 20
  31. 2940
  32. 1239
  33. 5
  34. 15
  35. 36.5
  36. 1185
  37. 6272
  38. 462
  39. 3.5
  40. 1498

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