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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 769 · 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 ₹3220 to ₹3059. By what percent did it come down?
  2. 2.The price of a bicycle is ₹4420. It goes up by 20%. What is the new price (in ₹)?
  3. 3.A shop sells 1480 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  4. 4.The price of a school bag changes from ₹3240 to ₹2268. By what percent did it come down?
  5. 5.A water tank holds 3940 litres. 30% of the water is used. How many litres are left?
  6. 6.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  7. 7.The price of a school bag changes from ₹2820 to ₹3948. By what percent did it go up?
  8. 8.A town has 2420 people. Its population grows by 25%. How many people live there now?
  9. 9.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
  10. 10.A water tank holds 3280 litres. 30% of the water is used. How many litres are left?
  11. 11.A water tank holds 1080 litres. 10% of the water is used. How many litres are left?
  12. 12.A shop sells 3880 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  13. 13.The price of a school bag changes from ₹3620 to ₹4163. By what percent did it go up?
  14. 14.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  15. 15.The price of a school bag changes from ₹3580 to ₹4654. By what percent did it go up?
  16. 16.The price of a school bag changes from ₹160 to ₹224. By what percent did it go up?
  17. 17.The price of a school bag changes from ₹1260 to ₹1512. By what percent did it go up?
  18. 18.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  19. 19.A water tank holds 4680 litres. 50% of the water is used. How many litres are left?
  20. 20.A town has 500 people. Its population grows by 40%. How many people live there now?
  21. 21.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  22. 22.A water tank holds 3420 litres. 10% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹2400 to ₹3120. By what percent did it go up?
  24. 24.A water tank holds 3420 litres. 25% of the water is used. How many litres are left?
  25. 25.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹1720 to ₹1032. By what percent did it come down?
  27. 27.The price of a school bag changes from ₹2340 to ₹3042. By what percent did it go up?
  28. 28.The price of a bicycle is ₹4560. It goes up by 50%. What is the new price (in ₹)?
  29. 29.The price of a bicycle is ₹880. It goes up by 10%. What is the new price (in ₹)?
  30. 30.The price of a bicycle is ₹2060. It goes up by 10%. What is the new price (in ₹)?
  31. 31.A shop sells 2640 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  32. 32.A water tank holds 1160 litres. 10% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹2260 to ₹2825. By what percent did it go up?
  34. 34.A shop sells 280 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  35. 35.The price of a school bag changes from ₹1800 to ₹1980. By what percent did it go up?
  36. 36.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  37. 37.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  38. 38.The price of a school bag changes from ₹2220 to ₹1554. By what percent did it come down?
  39. 39.The price of a school bag changes from ₹1180 to ₹1121. By what percent did it come down?
  40. 40.A shop sells 3300 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?

Answer key

  1. 5
  2. 5304
  3. 2072
  4. 30
  5. 2758
  6. 19.25
  7. 40
  8. 3025
  9. 19
  10. 2296
  11. 972
  12. 4268
  13. 15
  14. 14.5
  15. 30
  16. 40
  17. 20
  18. 57.5
  19. 2340
  20. 700
  21. 23.5
  22. 3078
  23. 30
  24. 2565
  25. 110
  26. 40
  27. 30
  28. 6840
  29. 968
  30. 2266
  31. 2772
  32. 1044
  33. 25
  34. 364
  35. 10
  36. 17
  37. 23.5
  38. 30
  39. 5
  40. 3465

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