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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 815 · 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 2020 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  2. 2.The price of a bicycle is ₹1960. It goes up by 10%. What is the new price (in ₹)?
  3. 3.A shop sells 380 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  4. 4.A town has 3500 people. Its population grows by 30%. How many people live there now?
  5. 5.A water tank holds 460 litres. 30% of the water is used. How many litres are left?
  6. 6.A water tank holds 2140 litres. 30% of the water is used. How many litres are left?
  7. 7.A water tank holds 2480 litres. 10% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹3280 to ₹2952. By what percent did it come down?
  9. 9.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  10. 10.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  11. 11.The price of a school bag changes from ₹2280 to ₹3420. By what percent did it go up?
  12. 12.A shop sells 400 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  13. 13.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  14. 14.A shop sells 4840 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  15. 15.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  16. 16.The price of a school bag changes from ₹3340 to ₹2338. By what percent did it come down?
  17. 17.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  18. 18.A water tank holds 3260 litres. 30% of the water is used. How many litres are left?
  19. 19.A price goes up by 50% and then comes down by 25%. By what percent has it gone up in all? =
  20. 20.A water tank holds 140 litres. 20% of the water is used. How many litres are left?
  21. 21.The price of a school bag changes from ₹160 to ₹184. By what percent did it go up?
  22. 22.The price of a school bag changes from ₹2500 to ₹2750. By what percent did it go up?
  23. 23.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  24. 24.A water tank holds 1980 litres. 15% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹420 to ₹441. By what percent did it go up?
  26. 26.A shop sells 1560 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  27. 27.A town has 1880 people. Its population grows by 50%. How many people live there now?
  28. 28.The price of a school bag changes from ₹1200 to ₹1020. By what percent did it come down?
  29. 29.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  30. 30.The price of a bicycle is ₹3200. It goes up by 5%. What is the new price (in ₹)?
  31. 31.A price comes down by 20% and then comes down by 10% more. By what percent has it come down in all? =
  32. 32.A shop sells 1260 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  33. 33.The price of a school bag changes from ₹2280 to ₹1938. By what percent did it come down?
  34. 34.A shop sells 1180 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  35. 35.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  36. 36.The price of a bicycle is ₹4600. It goes up by 50%. What is the new price (in ₹)?
  37. 37.A shop sells 2140 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  38. 38.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  39. 39.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  40. 40.The price of a bicycle is ₹2040. It goes up by 15%. What is the new price (in ₹)?

Answer key

  1. 2323
  2. 2156
  3. 399
  4. 4550
  5. 322
  6. 1498
  7. 2232
  8. 10
  9. 32.5
  10. 62.5
  11. 50
  12. 420
  13. 47.5
  14. 5808
  15. 27.5
  16. 30
  17. 23.5
  18. 2282
  19. 12.5
  20. 112
  21. 15
  22. 10
  23. 21
  24. 1683
  25. 5
  26. 2340
  27. 2820
  28. 15
  29. 43
  30. 3360
  31. 28
  32. 1512
  33. 15
  34. 1770
  35. 57.5
  36. 6900
  37. 2354
  38. 10.25
  39. 82
  40. 2346

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