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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 241 · 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 school bag changes from ₹1140 to ₹1254. By what percent did it go up?
  2. 2.A water tank holds 4020 litres. 10% of the water is used. How many litres are left?
  3. 3.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  4. 4.A town has 1920 people. Its population grows by 15%. How many people live there now?
  5. 5.A town has 2860 people. Its population grows by 30%. How many people live there now?
  6. 6.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  7. 7.A shop sells 4680 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  8. 8.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  9. 9.The price of a school bag changes from ₹4420 to ₹5525. By what percent did it go up?
  10. 10.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  11. 11.The price of a school bag changes from ₹3580 to ₹5370. By what percent did it go up?
  12. 12.The price of a school bag changes from ₹3820 to ₹2865. By what percent did it come down?
  13. 13.A shop sells 4100 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  14. 14.A water tank holds 4440 litres. 20% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹4280 to ₹3424. By what percent did it come down?
  16. 16.A shop sells 820 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  17. 17.A water tank holds 4040 litres. 10% of the water is used. How many litres are left?
  18. 18.The price of a bicycle is ₹1720. It goes up by 40%. What is the new price (in ₹)?
  19. 19.A water tank holds 4540 litres. 15% of the water is used. How many litres are left?
  20. 20.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  21. 21.The price of a bicycle is ₹4740. It goes up by 30%. What is the new price (in ₹)?
  22. 22.The price of a school bag changes from ₹3180 to ₹3498. By what percent did it go up?
  23. 23.The price of a bicycle is ₹640. It goes up by 30%. What is the new price (in ₹)?
  24. 24.A price comes down by 30% and then comes down by 50% more. By what percent has it come down in all? =
  25. 25.A town has 1320 people. Its population grows by 30%. How many people live there now?
  26. 26.The price of a bicycle is ₹3220. It goes up by 5%. What is the new price (in ₹)?
  27. 27.A water tank holds 1860 litres. 25% of the water is used. How many litres are left?
  28. 28.The price of a bicycle is ₹440. It goes up by 25%. What is the new price (in ₹)?
  29. 29.A water tank holds 3680 litres. 10% of the water is used. How many litres are left?
  30. 30.A water tank holds 2020 litres. 30% of the water is used. How many litres are left?
  31. 31.The price of a school bag changes from ₹1400 to ₹1050. By what percent did it come down?
  32. 32.A town has 3920 people. Its population grows by 40%. How many people live there now?
  33. 33.The price of a school bag changes from ₹3880 to ₹3298. By what percent did it come down?
  34. 34.A water tank holds 380 litres. 15% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹3340 to ₹2505. By what percent did it come down?
  36. 36.The price of a bicycle is ₹2680. It goes up by 25%. What is the new price (in ₹)?
  37. 37.The price of a school bag changes from ₹520 to ₹442. By what percent did it come down?
  38. 38.A water tank holds 340 litres. 40% of the water is used. How many litres are left?
  39. 39.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  40. 40.The price of a school bag changes from ₹440 to ₹352. By what percent did it come down?

Answer key

  1. 10
  2. 3618
  3. 54
  4. 2208
  5. 3718
  6. 23.5
  7. 4914
  8. 14
  9. 25
  10. 46
  11. 50
  12. 25
  13. 4305
  14. 3552
  15. 20
  16. 902
  17. 3636
  18. 2408
  19. 3859
  20. 72.5
  21. 6162
  22. 10
  23. 832
  24. 65
  25. 1716
  26. 3381
  27. 1395
  28. 550
  29. 3312
  30. 1414
  31. 25
  32. 5488
  33. 15
  34. 323
  35. 25
  36. 3350
  37. 15
  38. 204
  39. 19.25
  40. 20

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