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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 436 · 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.A shop sells 480 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  2. 2.The price of a bicycle is ₹3400. It goes up by 15%. What is the new price (in ₹)?
  3. 3.A water tank holds 2960 litres. 20% of the water is used. How many litres are left?
  4. 4.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  5. 5.A water tank holds 3380 litres. 50% of the water is used. How many litres are left?
  6. 6.A water tank holds 1460 litres. 25% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹900 to ₹765. By what percent did it come down?
  8. 8.The price of a school bag changes from ₹520 to ₹364. By what percent did it come down?
  9. 9.The price of a school bag changes from ₹480 to ₹240. By what percent did it come down?
  10. 10.A water tank holds 4420 litres. 25% of the water is used. How many litres are left?
  11. 11.A water tank holds 3800 litres. 5% of the water is used. How many litres are left?
  12. 12.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  13. 13.The price of a school bag changes from ₹360 to ₹342. By what percent did it come down?
  14. 14.A water tank holds 1460 litres. 10% of the water is used. How many litres are left?
  15. 15.A water tank holds 4580 litres. 30% of the water is used. How many litres are left?
  16. 16.A town has 800 people. Its population grows by 50%. How many people live there now?
  17. 17.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  18. 18.A water tank holds 880 litres. 25% of the water is used. How many litres are left?
  19. 19.A water tank holds 3160 litres. 10% of the water is used. How many litres are left?
  20. 20.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  21. 21.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  22. 22.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  23. 23.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  24. 24.The price of a bicycle is ₹1040. It goes up by 25%. What is the new price (in ₹)?
  25. 25.A town has 4880 people. Its population grows by 25%. How many people live there now?
  26. 26.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  27. 27.A town has 4620 people. Its population grows by 5%. How many people live there now?
  28. 28.A water tank holds 1980 litres. 5% of the water is used. How many litres are left?
  29. 29.The price of a school bag changes from ₹920 to ₹1058. By what percent did it go up?
  30. 30.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  31. 31.A water tank holds 820 litres. 30% of the water is used. How many litres are left?
  32. 32.A water tank holds 1760 litres. 25% of the water is used. How many litres are left?
  33. 33.A shop sells 360 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  34. 34.A water tank holds 3620 litres. 10% of the water is used. How many litres are left?
  35. 35.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  36. 36.The price of a school bag changes from ₹740 to ₹1036. By what percent did it go up?
  37. 37.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  38. 38.The price of a school bag changes from ₹4100 to ₹3075. By what percent did it come down?
  39. 39.A town has 1420 people. Its population grows by 5%. How many people live there now?
  40. 40.A water tank holds 1480 litres. 15% of the water is used. How many litres are left?

Answer key

  1. 552
  2. 3910
  3. 2368
  4. 9.25
  5. 1690
  6. 1095
  7. 15
  8. 30
  9. 50
  10. 3315
  11. 3610
  12. 36.25
  13. 5
  14. 1314
  15. 3206
  16. 1200
  17. 19
  18. 660
  19. 2844
  20. 72.5
  21. 32
  22. 50
  23. 15.5
  24. 1300
  25. 6100
  26. 43
  27. 4851
  28. 1881
  29. 15
  30. 57.5
  31. 574
  32. 1320
  33. 396
  34. 3258
  35. 95
  36. 40
  37. 82
  38. 25
  39. 1491
  40. 1258

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