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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 117 · 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 price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  2. 2.A shop sells 1420 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  3. 3.The price of a school bag changes from ₹2160 to ₹2700. By what percent did it go up?
  4. 4.The price of a bicycle is ₹2120. It goes up by 50%. What is the new price (in ₹)?
  5. 5.The price of a school bag changes from ₹2320 to ₹2436. By what percent did it go up?
  6. 6.A shop sells 760 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  7. 7.The price of a school bag changes from ₹2760 to ₹1380. By what percent did it come down?
  8. 8.A water tank holds 3060 litres. 50% of the water is used. How many litres are left?
  9. 9.The price of a school bag changes from ₹3600 to ₹2700. By what percent did it come down?
  10. 10.A water tank holds 560 litres. 10% of the water is used. How many litres are left?
  11. 11.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  12. 12.A shop sells 1140 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  13. 13.The price of a school bag changes from ₹2460 to ₹2214. By what percent did it come down?
  14. 14.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =
  15. 15.A water tank holds 1420 litres. 20% of the water is used. How many litres are left?
  16. 16.The price of a school bag changes from ₹4660 to ₹3961. By what percent did it come down?
  17. 17.The price of a bicycle is ₹4660. It goes up by 15%. What is the new price (in ₹)?
  18. 18.The price of a school bag changes from ₹3860 to ₹5018. By what percent did it go up?
  19. 19.The price of a bicycle is ₹2500. It goes up by 15%. What is the new price (in ₹)?
  20. 20.A water tank holds 4480 litres. 50% of the water is used. How many litres are left?
  21. 21.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  22. 22.The price of a school bag changes from ₹2160 to ₹3024. By what percent did it go up?
  23. 23.The price of a school bag changes from ₹4320 to ₹4968. By what percent did it go up?
  24. 24.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
  25. 25.A water tank holds 4760 litres. 5% of the water is used. How many litres are left?
  26. 26.The price of a bicycle is ₹2160. It goes up by 10%. What is the new price (in ₹)?
  27. 27.A water tank holds 2400 litres. 5% of the water is used. How many litres are left?
  28. 28.A shop sells 2940 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  29. 29.The price of a school bag changes from ₹4860 to ₹5346. By what percent did it go up?
  30. 30.A water tank holds 200 litres. 25% of the water is used. How many litres are left?
  31. 31.A town has 4940 people. Its population grows by 5%. How many people live there now?
  32. 32.A water tank holds 2960 litres. 50% of the water is used. How many litres are left?
  33. 33.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  34. 34.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  35. 35.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  36. 36.A water tank holds 3520 litres. 20% of the water is used. How many litres are left?
  37. 37.A shop sells 2340 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  38. 38.A price comes down by 50% and then comes down by 30% more. By what percent has it come down in all? =
  39. 39.A water tank holds 4840 litres. 40% of the water is used. How many litres are left?
  40. 40.A water tank holds 2560 litres. 30% of the water is used. How many litres are left?

Answer key

  1. 14.5
  2. 1704
  3. 25
  4. 3180
  5. 5
  6. 874
  7. 50
  8. 1530
  9. 25
  10. 504
  11. 19.25
  12. 1425
  13. 10
  14. 36.25
  15. 1136
  16. 15
  17. 5359
  18. 30
  19. 2875
  20. 2240
  21. 4.5
  22. 40
  23. 15
  24. 62.5
  25. 4522
  26. 2376
  27. 2280
  28. 3822
  29. 10
  30. 150
  31. 5187
  32. 1480
  33. 47.5
  34. 19
  35. 15.5
  36. 2816
  37. 2808
  38. 65
  39. 2904
  40. 1792

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