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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 993 · 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 bicycle is ₹240. It goes up by 40%. What is the new price (in ₹)?
  2. 2.The price of a bicycle is ₹2080. It goes up by 5%. What is the new price (in ₹)?
  3. 3.A shop sells 4240 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  4. 4.The price of a bicycle is ₹1280. It goes up by 15%. What is the new price (in ₹)?
  5. 5.The price of a bicycle is ₹4060. It goes up by 20%. What is the new price (in ₹)?
  6. 6.The price of a school bag changes from ₹380 to ₹418. By what percent did it go up?
  7. 7.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  8. 8.A water tank holds 1100 litres. 25% of the water is used. How many litres are left?
  9. 9.A water tank holds 2600 litres. 40% of the water is used. How many litres are left?
  10. 10.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
  11. 11.A price comes down by 30% and then comes down by 30% more. By what percent has it come down in all? =
  12. 12.A water tank holds 160 litres. 25% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹980 to ₹588. By what percent did it come down?
  14. 14.A water tank holds 2940 litres. 50% of the water is used. How many litres are left?
  15. 15.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
  16. 16.A town has 1040 people. Its population grows by 15%. How many people live there now?
  17. 17.The price of a school bag changes from ₹60 to ₹69. By what percent did it go up?
  18. 18.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  19. 19.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
  20. 20.A town has 640 people. Its population grows by 50%. How many people live there now?
  21. 21.The price of a bicycle is ₹1740. It goes up by 40%. What is the new price (in ₹)?
  22. 22.A water tank holds 1480 litres. 10% of the water is used. How many litres are left?
  23. 23.A town has 1080 people. Its population grows by 25%. How many people live there now?
  24. 24.The price of a school bag changes from ₹2100 to ₹1470. By what percent did it come down?
  25. 25.A town has 280 people. Its population grows by 20%. How many people live there now?
  26. 26.The price of a bicycle is ₹3800. It goes up by 40%. What is the new price (in ₹)?
  27. 27.A water tank holds 60 litres. 5% of the water is used. How many litres are left?
  28. 28.A shop sells 220 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  29. 29.A shop sells 2380 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  30. 30.A shop sells 620 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  31. 31.A water tank holds 2040 litres. 5% of the water is used. How many litres are left?
  32. 32.A water tank holds 1660 litres. 5% of the water is used. How many litres are left?
  33. 33.A water tank holds 1140 litres. 20% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹2300 to ₹2185. By what percent did it come down?
  35. 35.The price of a bicycle is ₹4360. It goes up by 25%. What is the new price (in ₹)?
  36. 36.The price of a bicycle is ₹1500. It goes up by 15%. What is the new price (in ₹)?
  37. 37.The price of a school bag changes from ₹600 to ₹300. By what percent did it come down?
  38. 38.A shop sells 2000 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  39. 39.A water tank holds 4540 litres. 5% of the water is used. How many litres are left?
  40. 40.A shop sells 3720 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?

Answer key

  1. 336
  2. 2184
  3. 5300
  4. 1472
  5. 4872
  6. 10
  7. 37.5
  8. 825
  9. 1560
  10. 125
  11. 51
  12. 120
  13. 40
  14. 1470
  15. 55
  16. 1196
  17. 15
  18. 96
  19. 69
  20. 960
  21. 2436
  22. 1332
  23. 1350
  24. 30
  25. 336
  26. 5320
  27. 57
  28. 308
  29. 2618
  30. 682
  31. 1938
  32. 1577
  33. 912
  34. 5
  35. 5450
  36. 1725
  37. 50
  38. 2200
  39. 4313
  40. 4836

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