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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 647 · 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 3020 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  2. 2.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  3. 3.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  4. 4.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
  5. 5.The price of a school bag changes from ₹3180 to ₹2385. By what percent did it come down?
  6. 6.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  7. 7.The price of a bicycle is ₹1240. It goes up by 10%. What is the new price (in ₹)?
  8. 8.The price of a bicycle is ₹3700. It goes up by 15%. What is the new price (in ₹)?
  9. 9.The price of a school bag changes from ₹2060 to ₹2575. By what percent did it go up?
  10. 10.The price of a school bag changes from ₹3160 to ₹3950. By what percent did it go up?
  11. 11.The price of a school bag changes from ₹4560 to ₹5700. By what percent did it go up?
  12. 12.The price of a school bag changes from ₹280 to ₹196. By what percent did it come down?
  13. 13.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  14. 14.The price of a school bag changes from ₹4280 to ₹2996. By what percent did it come down?
  15. 15.A water tank holds 400 litres. 40% of the water is used. How many litres are left?
  16. 16.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  17. 17.A town has 2860 people. Its population grows by 25%. How many people live there now?
  18. 18.The price of a school bag changes from ₹3840 to ₹4800. By what percent did it go up?
  19. 19.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
  20. 20.A water tank holds 100 litres. 25% of the water is used. How many litres are left?
  21. 21.A town has 4960 people. Its population grows by 30%. How many people live there now?
  22. 22.The price of a school bag changes from ₹1700 to ₹1275. By what percent did it come down?
  23. 23.A town has 640 people. Its population grows by 25%. How many people live there now?
  24. 24.A town has 2240 people. Its population grows by 10%. How many people live there now?
  25. 25.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  26. 26.The price of a bicycle is ₹3400. It goes up by 15%. What is the new price (in ₹)?
  27. 27.A town has 4040 people. Its population grows by 30%. How many people live there now?
  28. 28.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  29. 29.A shop sells 2740 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  30. 30.A water tank holds 180 litres. 40% of the water is used. How many litres are left?
  31. 31.A shop sells 4500 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  32. 32.The price of a school bag changes from ₹4160 to ₹3120. By what percent did it come down?
  33. 33.A town has 2860 people. Its population grows by 50%. How many people live there now?
  34. 34.The price of a school bag changes from ₹140 to ₹70. By what percent did it come down?
  35. 35.A water tank holds 3100 litres. 40% of the water is used. How many litres are left?
  36. 36.A shop sells 4660 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  37. 37.A water tank holds 4420 litres. 15% of the water is used. How many litres are left?
  38. 38.A shop sells 2380 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  39. 39.The price of a school bag changes from ₹1460 to ₹1533. By what percent did it go up?
  40. 40.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =

Answer key

  1. 4530
  2. 15.5
  3. 27.5
  4. 44
  5. 25
  6. 80
  7. 1364
  8. 4255
  9. 25
  10. 25
  11. 25
  12. 30
  13. 4
  14. 30
  15. 240
  16. 3.5
  17. 3575
  18. 25
  19. 42.5
  20. 75
  21. 6448
  22. 25
  23. 800
  24. 2464
  25. 4.5
  26. 3910
  27. 5252
  28. 23.5
  29. 3425
  30. 108
  31. 5175
  32. 25
  33. 4290
  34. 50
  35. 1860
  36. 5592
  37. 3757
  38. 2499
  39. 5
  40. 68

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