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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 284 · 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 goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  2. 2.A shop sells 2140 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 5% and then goes up by 25% more. By what percent has it gone up in all? =
  4. 4.The price of a school bag changes from ₹300 to ₹255. By what percent did it come down?
  5. 5.A water tank holds 2120 litres. 5% of the water is used. How many litres are left?
  6. 6.The price of a school bag changes from ₹1620 to ₹1296. By what percent did it come down?
  7. 7.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  8. 8.A town has 2580 people. Its population grows by 15%. How many people live there now?
  9. 9.A water tank holds 3660 litres. 30% of the water is used. How many litres are left?
  10. 10.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  11. 11.The price of a school bag changes from ₹300 to ₹150. By what percent did it come down?
  12. 12.The price of a school bag changes from ₹3080 to ₹2464. By what percent did it come down?
  13. 13.A shop sells 4060 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  14. 14.A water tank holds 3440 litres. 5% of the water is used. How many litres are left?
  15. 15.A water tank holds 1600 litres. 5% of the water is used. How many litres are left?
  16. 16.A water tank holds 2120 litres. 10% of the water is used. How many litres are left?
  17. 17.A town has 4620 people. Its population grows by 10%. How many people live there now?
  18. 18.A water tank holds 1840 litres. 25% of the water is used. How many litres are left?
  19. 19.The price of a bicycle is ₹2080. It goes up by 40%. What is the new price (in ₹)?
  20. 20.The price of a school bag changes from ₹2300 to ₹1610. By what percent did it come down?
  21. 21.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  22. 22.The price of a school bag changes from ₹3880 to ₹3686. By what percent did it come down?
  23. 23.A water tank holds 1440 litres. 25% of the water is used. How many litres are left?
  24. 24.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  25. 25.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  26. 26.A water tank holds 3820 litres. 20% of the water is used. How many litres are left?
  27. 27.A water tank holds 3180 litres. 10% of the water is used. How many litres are left?
  28. 28.The price of a school bag changes from ₹2360 to ₹1180. By what percent did it come down?
  29. 29.A water tank holds 3880 litres. 10% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹580 to ₹609. By what percent did it go up?
  31. 31.The price of a school bag changes from ₹1240 to ₹1302. By what percent did it go up?
  32. 32.The price of a bicycle is ₹4420. It goes up by 25%. What is the new price (in ₹)?
  33. 33.A town has 3560 people. Its population grows by 10%. How many people live there now?
  34. 34.A water tank holds 4860 litres. 15% of the water is used. How many litres are left?
  35. 35.A water tank holds 2120 litres. 15% of the water is used. How many litres are left?
  36. 36.The price of a school bag changes from ₹1180 to ₹1298. By what percent did it go up?
  37. 37.A price comes down by 50% and then comes down by 30% more. By what percent has it come down in all? =
  38. 38.A water tank holds 520 litres. 10% of the water is used. How many litres are left?
  39. 39.The price of a bicycle is ₹460. It goes up by 15%. What is the new price (in ₹)?
  40. 40.The price of a school bag changes from ₹380 to ₹285. By what percent did it come down?

Answer key

  1. 54
  2. 2996
  3. 31.25
  4. 15
  5. 2014
  6. 20
  7. 87.5
  8. 2967
  9. 2562
  10. 23.5
  11. 50
  12. 20
  13. 4466
  14. 3268
  15. 1520
  16. 1908
  17. 5082
  18. 1380
  19. 2912
  20. 30
  21. 43
  22. 5
  23. 1080
  24. 15.5
  25. 20.75
  26. 3056
  27. 2862
  28. 50
  29. 3492
  30. 5
  31. 5
  32. 5525
  33. 3916
  34. 4131
  35. 1802
  36. 10
  37. 65
  38. 468
  39. 529
  40. 25

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