← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 714 · 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 ₹3080 to ₹3850. By what percent did it go up?
  2. 2.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  3. 3.A shop sells 700 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  4. 4.A water tank holds 3560 litres. 15% of the water is used. How many litres are left?
  5. 5.A water tank holds 4660 litres. 25% of the water is used. How many litres are left?
  6. 6.A water tank holds 2200 litres. 20% of the water is used. How many litres are left?
  7. 7.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  8. 8.The price of a school bag changes from ₹4620 to ₹5082. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹2600 to ₹1820. By what percent did it come down?
  10. 10.A water tank holds 1940 litres. 20% of the water is used. How many litres are left?
  11. 11.A water tank holds 280 litres. 30% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹2500 to ₹2375. By what percent did it come down?
  13. 13.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  14. 14.A shop sells 3620 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  15. 15.The price of a school bag changes from ₹1100 to ₹990. By what percent did it come down?
  16. 16.A water tank holds 2400 litres. 50% of the water is used. How many litres are left?
  17. 17.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  18. 18.A water tank holds 2460 litres. 10% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹2840 to ₹3976. By what percent did it go up?
  20. 20.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  21. 21.The price of a school bag changes from ₹2760 to ₹3312. By what percent did it go up?
  22. 22.The price of a school bag changes from ₹500 to ₹350. By what percent did it come down?
  23. 23.The price of a school bag changes from ₹1720 to ₹2236. By what percent did it go up?
  24. 24.The price of a bicycle is ₹1600. It goes up by 20%. What is the new price (in ₹)?
  25. 25.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  26. 26.A price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
  27. 27.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  28. 28.The price of a school bag changes from ₹3440 to ₹2580. By what percent did it come down?
  29. 29.A water tank holds 3040 litres. 30% of the water is used. How many litres are left?
  30. 30.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
  31. 31.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  32. 32.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  33. 33.The price of a bicycle is ₹380. It goes up by 10%. What is the new price (in ₹)?
  34. 34.A water tank holds 1120 litres. 5% of the water is used. How many litres are left?
  35. 35.A shop sells 160 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  36. 36.A shop sells 2920 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  37. 37.A town has 4620 people. Its population grows by 5%. How many people live there now?
  38. 38.A shop sells 2620 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  39. 39.A town has 2240 people. Its population grows by 25%. How many people live there now?
  40. 40.A town has 1860 people. Its population grows by 50%. How many people live there now?

Answer key

  1. 25
  2. 3.5
  3. 875
  4. 3026
  5. 3495
  6. 1760
  7. 19
  8. 10
  9. 30
  10. 1552
  11. 196
  12. 5
  13. 31.25
  14. 4525
  15. 10
  16. 1200
  17. 95
  18. 2214
  19. 40
  20. 37.5
  21. 20
  22. 30
  23. 30
  24. 1920
  25. 43.75
  26. 75
  27. 52.5
  28. 25
  29. 2128
  30. 62.5
  31. 47
  32. 43
  33. 418
  34. 1064
  35. 208
  36. 4380
  37. 4851
  38. 3275
  39. 2800
  40. 2790

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude