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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 195 · 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 ₹4080. It goes up by 20%. What is the new price (in ₹)?
  2. 2.A water tank holds 200 litres. 30% of the water is used. How many litres are left?
  3. 3.The price of a bicycle is ₹2200. It goes up by 50%. What is the new price (in ₹)?
  4. 4.The price of a school bag changes from ₹3280 to ₹4264. By what percent did it go up?
  5. 5.A water tank holds 460 litres. 25% of the water is used. How many litres are left?
  6. 6.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  7. 7.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
  8. 8.A water tank holds 4920 litres. 50% of the water is used. How many litres are left?
  9. 9.The price of a school bag changes from ₹280 to ₹140. By what percent did it come down?
  10. 10.A town has 380 people. Its population grows by 15%. How many people live there now?
  11. 11.The price of a school bag changes from ₹1100 to ₹935. By what percent did it come down?
  12. 12.A shop sells 4160 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  13. 13.The price of a school bag changes from ₹160 to ₹152. By what percent did it come down?
  14. 14.A water tank holds 4680 litres. 25% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹1520 to ₹1748. By what percent did it go up?
  16. 16.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  17. 17.The price of a school bag changes from ₹2240 to ₹2128. By what percent did it come down?
  18. 18.A water tank holds 3520 litres. 20% of the water is used. How many litres are left?
  19. 19.A water tank holds 3980 litres. 30% of the water is used. How many litres are left?
  20. 20.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  21. 21.The price of a school bag changes from ₹3780 to ₹5292. By what percent did it go up?
  22. 22.The price of a bicycle is ₹3360. It goes up by 15%. What is the new price (in ₹)?
  23. 23.The price of a school bag changes from ₹4220 to ₹3165. By what percent did it come down?
  24. 24.The price of a school bag changes from ₹2020 to ₹2121. By what percent did it go up?
  25. 25.A water tank holds 2140 litres. 15% of the water is used. How many litres are left?
  26. 26.A town has 4120 people. Its population grows by 10%. How many people live there now?
  27. 27.The price of a bicycle is ₹1640. It goes up by 40%. What is the new price (in ₹)?
  28. 28.A water tank holds 2240 litres. 20% of the water is used. How many litres are left?
  29. 29.A water tank holds 1420 litres. 25% of the water is used. How many litres are left?
  30. 30.A town has 1700 people. Its population grows by 40%. How many people live there now?
  31. 31.A shop sells 3020 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  32. 32.The price of a school bag changes from ₹4760 to ₹5950. By what percent did it go up?
  33. 33.A water tank holds 1040 litres. 15% of the water is used. How many litres are left?
  34. 34.A shop sells 4040 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  35. 35.The price of a school bag changes from ₹2820 to ₹3243. By what percent did it go up?
  36. 36.A water tank holds 400 litres. 50% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹1400 to ₹1680. By what percent did it go up?
  38. 38.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  39. 39.A town has 2380 people. Its population grows by 50%. How many people live there now?
  40. 40.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =

Answer key

  1. 4896
  2. 140
  3. 3300
  4. 30
  5. 345
  6. 15.5
  7. 70
  8. 2460
  9. 50
  10. 437
  11. 15
  12. 4576
  13. 5
  14. 3510
  15. 15
  16. 43
  17. 5
  18. 2816
  19. 2786
  20. 20.75
  21. 40
  22. 3864
  23. 25
  24. 5
  25. 1819
  26. 4532
  27. 2296
  28. 1792
  29. 1065
  30. 2380
  31. 3624
  32. 25
  33. 884
  34. 5252
  35. 15
  36. 200
  37. 20
  38. 62.5
  39. 3570
  40. 68

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