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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 145 · 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 ₹3540. It goes up by 30%. What is the new price (in ₹)?
  2. 2.A water tank holds 1520 litres. 20% of the water is used. How many litres are left?
  3. 3.A town has 1460 people. Its population grows by 25%. How many people live there now?
  4. 4.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  5. 5.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  6. 6.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  7. 7.A water tank holds 1220 litres. 5% of the water is used. How many litres are left?
  8. 8.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  9. 9.A water tank holds 1180 litres. 15% of the water is used. How many litres are left?
  10. 10.A town has 4920 people. Its population grows by 15%. How many people live there now?
  11. 11.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  12. 12.A shop sells 4660 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  13. 13.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  14. 14.A town has 2280 people. Its population grows by 10%. How many people live there now?
  15. 15.The price of a school bag changes from ₹780 to ₹975. 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.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  18. 18.The price of a bicycle is ₹1240. It goes up by 15%. What is the new price (in ₹)?
  19. 19.A water tank holds 2960 litres. 10% of the water is used. How many litres are left?
  20. 20.The price of a bicycle is ₹4920. It goes up by 5%. What is the new price (in ₹)?
  21. 21.A water tank holds 720 litres. 50% of the water is used. How many litres are left?
  22. 22.A water tank holds 80 litres. 5% of the water is used. How many litres are left?
  23. 23.The price of a bicycle is ₹1480. It goes up by 30%. What is the new price (in ₹)?
  24. 24.The price of a school bag changes from ₹3300 to ₹2805. By what percent did it come down?
  25. 25.A town has 3200 people. Its population grows by 40%. How many people live there now?
  26. 26.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  27. 27.A shop sells 3680 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  28. 28.A water tank holds 2280 litres. 15% of the water is used. How many litres are left?
  29. 29.A town has 2720 people. Its population grows by 10%. How many people live there now?
  30. 30.The price of a school bag changes from ₹4960 to ₹5952. By what percent did it go up?
  31. 31.The price of a school bag changes from ₹4820 to ₹2892. By what percent did it come down?
  32. 32.The price of a bicycle is ₹1060. It goes up by 5%. What is the new price (in ₹)?
  33. 33.The price of a school bag changes from ₹3120 to ₹4680. By what percent did it go up?
  34. 34.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  35. 35.The price of a school bag changes from ₹1240 to ₹868. By what percent did it come down?
  36. 36.The price of a school bag changes from ₹380 to ₹570. By what percent did it go up?
  37. 37.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  38. 38.A water tank holds 3740 litres. 40% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹1060 to ₹530. By what percent did it come down?
  40. 40.A town has 2540 people. Its population grows by 40%. How many people live there now?

Answer key

  1. 4602
  2. 1216
  3. 1825
  4. 47.5
  5. 31.25
  6. 43
  7. 1159
  8. 43
  9. 1003
  10. 5658
  11. 37.5
  12. 5592
  13. 14.5
  14. 2508
  15. 25
  16. 15.5
  17. 31.25
  18. 1426
  19. 2664
  20. 5166
  21. 360
  22. 76
  23. 1924
  24. 15
  25. 4480
  26. 19.25
  27. 5152
  28. 1938
  29. 2992
  30. 20
  31. 40
  32. 1113
  33. 50
  34. 33
  35. 30
  36. 50
  37. 14
  38. 2244
  39. 50
  40. 3556

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