← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 860 · 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 shop sells 680 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  2. 2.A town has 2060 people. Its population grows by 5%. How many people live there now?
  3. 3.The price of a school bag changes from ₹160 to ₹240. By what percent did it go up?
  4. 4.The price of a bicycle is ₹4300. It goes up by 20%. What is the new price (in ₹)?
  5. 5.A water tank holds 640 litres. 30% of the water is used. How many litres are left?
  6. 6.The price of a school bag changes from ₹4660 to ₹2796. By what percent did it come down?
  7. 7.The price of a school bag changes from ₹3820 to ₹2292. By what percent did it come down?
  8. 8.A price comes down by 20% and then comes down by 10% more. By what percent has it come down in all? =
  9. 9.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =
  10. 10.The price of a school bag changes from ₹2500 to ₹2375. By what percent did it come down?
  11. 11.A shop sells 940 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  12. 12.A water tank holds 800 litres. 15% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹4480 to ₹2240. By what percent did it come down?
  14. 14.A water tank holds 4340 litres. 10% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹340 to ₹272. By what percent did it come down?
  16. 16.A town has 1540 people. Its population grows by 15%. How many people live there now?
  17. 17.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  18. 18.A town has 1740 people. Its population grows by 20%. How many people live there now?
  19. 19.A water tank holds 380 litres. 50% of the water is used. How many litres are left?
  20. 20.A water tank holds 80 litres. 30% of the water is used. How many litres are left?
  21. 21.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  22. 22.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  23. 23.A town has 540 people. Its population grows by 40%. How many people live there now?
  24. 24.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  25. 25.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  26. 26.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  27. 27.A town has 740 people. Its population grows by 40%. How many people live there now?
  28. 28.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
  29. 29.The price of a school bag changes from ₹4660 to ₹6990. By what percent did it go up?
  30. 30.A water tank holds 740 litres. 20% of the water is used. How many litres are left?
  31. 31.A shop sells 4220 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  32. 32.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  33. 33.The price of a school bag changes from ₹3800 to ₹5320. By what percent did it go up?
  34. 34.A town has 4480 people. Its population grows by 40%. How many people live there now?
  35. 35.A water tank holds 1360 litres. 25% of the water is used. How many litres are left?
  36. 36.A water tank holds 2440 litres. 5% of the water is used. How many litres are left?
  37. 37.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  38. 38.The price of a bicycle is ₹2660. It goes up by 25%. What is the new price (in ₹)?
  39. 39.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  40. 40.The price of a bicycle is ₹4980. It goes up by 15%. What is the new price (in ₹)?

Answer key

  1. 952
  2. 2163
  3. 50
  4. 5160
  5. 448
  6. 40
  7. 40
  8. 28
  9. 36.25
  10. 5
  11. 1034
  12. 680
  13. 50
  14. 3906
  15. 20
  16. 1771
  17. 70
  18. 2088
  19. 190
  20. 56
  21. 62.5
  22. 33.5
  23. 756
  24. 55
  25. 57.5
  26. 87.5
  27. 1036
  28. 28.75
  29. 50
  30. 592
  31. 5908
  32. 87.5
  33. 40
  34. 6272
  35. 1020
  36. 2318
  37. 23.5
  38. 3325
  39. 38
  40. 5727

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