← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 218 · 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 50% and then comes down by 30% more. By what percent has it come down in all? =
  2. 2.A shop sells 2500 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  3. 3.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  4. 4.The price of a school bag changes from ₹2420 to ₹2299. By what percent did it come down?
  5. 5.A water tank holds 240 litres. 30% of the water is used. How many litres are left?
  6. 6.The price of a school bag changes from ₹4740 to ₹3555. By what percent did it come down?
  7. 7.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  8. 8.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  9. 9.A water tank holds 4960 litres. 50% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹3720 to ₹2976. By what percent did it come down?
  11. 11.The price of a school bag changes from ₹2900 to ₹1450. By what percent did it come down?
  12. 12.The price of a bicycle is ₹1580. It goes up by 30%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹160 to ₹144. By what percent did it come down?
  14. 14.The price of a bicycle is ₹1140. It goes up by 5%. What is the new price (in ₹)?
  15. 15.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  16. 16.A water tank holds 1260 litres. 10% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹1600 to ₹2080. By what percent did it go up?
  18. 18.The price of a bicycle is ₹860. It goes up by 5%. What is the new price (in ₹)?
  19. 19.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  20. 20.A water tank holds 2140 litres. 20% of the water is used. How many litres are left?
  21. 21.A shop sells 60 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  22. 22.The price of a school bag changes from ₹2780 to ₹1390. By what percent did it come down?
  23. 23.A town has 1160 people. Its population grows by 15%. How many people live there now?
  24. 24.The price of a school bag changes from ₹1420 to ₹1065. By what percent did it come down?
  25. 25.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹1840 to ₹2760. By what percent did it go up?
  27. 27.A water tank holds 440 litres. 30% of the water is used. How many litres are left?
  28. 28.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  29. 29.A shop sells 1380 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  30. 30.The price of a school bag changes from ₹620 to ₹372. By what percent did it come down?
  31. 31.The price of a school bag changes from ₹2580 to ₹3354. By what percent did it go up?
  32. 32.The price of a school bag changes from ₹3900 to ₹4680. By what percent did it go up?
  33. 33.The price of a bicycle is ₹2080. It goes up by 15%. What is the new price (in ₹)?
  34. 34.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  35. 35.A town has 1100 people. Its population grows by 50%. How many people live there now?
  36. 36.A town has 1120 people. Its population grows by 25%. How many people live there now?
  37. 37.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  38. 38.A shop sells 1920 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  39. 39.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  40. 40.The price of a school bag changes from ₹3280 to ₹3444. By what percent did it go up?

Answer key

  1. 65
  2. 3500
  3. 12
  4. 5
  5. 168
  6. 25
  7. 72.5
  8. 33
  9. 2480
  10. 20
  11. 50
  12. 2054
  13. 10
  14. 1197
  15. 43
  16. 1134
  17. 30
  18. 903
  19. 35
  20. 1712
  21. 84
  22. 50
  23. 1334
  24. 25
  25. 32
  26. 50
  27. 308
  28. 52
  29. 1449
  30. 40
  31. 30
  32. 20
  33. 2392
  34. 75
  35. 1650
  36. 1400
  37. 65
  38. 2112
  39. 32.5
  40. 5

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