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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 946 · 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 ₹740. It goes up by 25%. What is the new price (in ₹)?
  2. 2.A water tank holds 1640 litres. 5% of the water is used. How many litres are left?
  3. 3.The price of a school bag changes from ₹5000 to ₹6250. By what percent did it go up?
  4. 4.A water tank holds 2900 litres. 30% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹2980 to ₹2384. By what percent did it come down?
  6. 6.A water tank holds 1460 litres. 15% of the water is used. How many litres are left?
  7. 7.A water tank holds 880 litres. 15% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹3180 to ₹3339. By what percent did it go up?
  9. 9.A water tank holds 620 litres. 10% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹4260 to ₹2982. By what percent did it come down?
  11. 11.The price of a bicycle is ₹2400. It goes up by 40%. What is the new price (in ₹)?
  12. 12.A water tank holds 1420 litres. 30% of the water is used. How many litres are left?
  13. 13.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  14. 14.The price of a school bag changes from ₹3100 to ₹2480. By what percent did it come down?
  15. 15.A town has 220 people. Its population grows by 10%. How many people live there now?
  16. 16.A water tank holds 1300 litres. 30% of the water is used. How many litres are left?
  17. 17.A water tank holds 1360 litres. 15% of the water is used. How many litres are left?
  18. 18.A town has 3100 people. Its population grows by 15%. How many people live there now?
  19. 19.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  20. 20.A town has 3060 people. Its population grows by 5%. How many people live there now?
  21. 21.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  22. 22.A water tank holds 2720 litres. 15% of the water is used. How many litres are left?
  23. 23.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  24. 24.The price of a school bag changes from ₹560 to ₹728. By what percent did it go up?
  25. 25.A shop sells 120 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  26. 26.A water tank holds 3060 litres. 5% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹3820 to ₹4202. By what percent did it go up?
  28. 28.A water tank holds 2780 litres. 10% of the water is used. How many litres are left?
  29. 29.A shop sells 2440 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  30. 30.A shop sells 2260 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  31. 31.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  32. 32.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  33. 33.The price of a school bag changes from ₹1420 to ₹1278. By what percent did it come down?
  34. 34.The price of a school bag changes from ₹4400 to ₹6600. By what percent did it go up?
  35. 35.The price of a bicycle is ₹3360. It goes up by 50%. What is the new price (in ₹)?
  36. 36.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  37. 37.The price of a school bag changes from ₹1840 to ₹1380. By what percent did it come down?
  38. 38.The price of a school bag changes from ₹100 to ₹70. By what percent did it come down?
  39. 39.A water tank holds 1540 litres. 25% of the water is used. How many litres are left?
  40. 40.A water tank holds 2180 litres. 30% of the water is used. How many litres are left?

Answer key

  1. 925
  2. 1558
  3. 25
  4. 2030
  5. 20
  6. 1241
  7. 748
  8. 5
  9. 558
  10. 30
  11. 3360
  12. 994
  13. 2
  14. 20
  15. 242
  16. 910
  17. 1156
  18. 3565
  19. 17
  20. 3213
  21. 31.25
  22. 2312
  23. 49.5
  24. 30
  25. 150
  26. 2907
  27. 10
  28. 2502
  29. 3172
  30. 2825
  31. 33
  32. 20.75
  33. 10
  34. 50
  35. 5040
  36. 55
  37. 25
  38. 30
  39. 1155
  40. 1526

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