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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 285 · 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 water tank holds 3060 litres. 15% of the water is used. How many litres are left?
  2. 2.The price of a school bag changes from ₹3740 to ₹1870. By what percent did it come down?
  3. 3.A water tank holds 1160 litres. 15% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹2160 to ₹1512. By what percent did it come down?
  5. 5.A water tank holds 3300 litres. 25% of the water is used. How many litres are left?
  6. 6.A shop sells 760 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  7. 7.A shop sells 4180 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  8. 8.The price of a bicycle is ₹2740. It goes up by 5%. What is the new price (in ₹)?
  9. 9.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  10. 10.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
  11. 11.A town has 1800 people. Its population grows by 5%. How many people live there now?
  12. 12.The price of a bicycle is ₹1520. It goes up by 40%. What is the new price (in ₹)?
  13. 13.A water tank holds 460 litres. 5% of the water is used. How many litres are left?
  14. 14.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  15. 15.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  16. 16.A water tank holds 4720 litres. 10% of the water is used. How many litres are left?
  17. 17.The price of a bicycle is ₹2300. It goes up by 50%. What is the new price (in ₹)?
  18. 18.The price of a school bag changes from ₹4100 to ₹3075. By what percent did it come down?
  19. 19.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  20. 20.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  21. 21.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  22. 22.A shop sells 4000 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  23. 23.A shop sells 3740 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  24. 24.A water tank holds 820 litres. 15% of the water is used. How many litres are left?
  25. 25.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹1980 to ₹1485. By what percent did it come down?
  27. 27.A town has 1380 people. Its population grows by 5%. How many people live there now?
  28. 28.A town has 4180 people. Its population grows by 25%. How many people live there now?
  29. 29.A town has 3820 people. Its population grows by 20%. How many people live there now?
  30. 30.A water tank holds 1260 litres. 5% of the water is used. How many litres are left?
  31. 31.A water tank holds 5000 litres. 50% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹1640 to ₹1476. By what percent did it come down?
  33. 33.A town has 4520 people. Its population grows by 40%. How many people live there now?
  34. 34.The price of a school bag changes from ₹3720 to ₹4836. By what percent did it go up?
  35. 35.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  36. 36.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
  37. 37.A water tank holds 4680 litres. 30% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹4880 to ₹5124. By what percent did it go up?
  39. 39.A town has 2440 people. Its population grows by 40%. How many people live there now?
  40. 40.The price of a bicycle is ₹2140. It goes up by 15%. What is the new price (in ₹)?

Answer key

  1. 2601
  2. 50
  3. 986
  4. 30
  5. 2475
  6. 798
  7. 4807
  8. 2877
  9. 43
  10. 32
  11. 1890
  12. 2128
  13. 437
  14. 54
  15. 33
  16. 4248
  17. 3450
  18. 25
  19. 2
  20. 28
  21. 50
  22. 4200
  23. 4675
  24. 697
  25. 75
  26. 25
  27. 1449
  28. 5225
  29. 4584
  30. 1197
  31. 2500
  32. 10
  33. 6328
  34. 30
  35. 20.75
  36. 38
  37. 3276
  38. 5
  39. 3416
  40. 2461

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