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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 74 · 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 ₹1560. It goes up by 50%. What is the new price (in ₹)?
  2. 2.The price of a school bag changes from ₹1840 to ₹1656. By what percent did it come down?
  3. 3.The price of a bicycle is ₹1660. It goes up by 40%. What is the new price (in ₹)?
  4. 4.A water tank holds 4880 litres. 50% of the water is used. How many litres are left?
  5. 5.A shop sells 2720 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  6. 6.The price of a school bag changes from ₹1260 to ₹1134. By what percent did it come down?
  7. 7.The price of a school bag changes from ₹3260 to ₹4238. By what percent did it go up?
  8. 8.A town has 2040 people. Its population grows by 30%. How many people live there now?
  9. 9.A water tank holds 520 litres. 50% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹960 to ₹576. By what percent did it come down?
  11. 11.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  12. 12.The price of a bicycle is ₹2400. It goes up by 30%. What is the new price (in ₹)?
  13. 13.A water tank holds 4360 litres. 5% of the water is used. How many litres are left?
  14. 14.The price of a bicycle is ₹1300. It goes up by 50%. What is the new price (in ₹)?
  15. 15.The price of a bicycle is ₹1500. It goes up by 40%. What is the new price (in ₹)?
  16. 16.A water tank holds 2520 litres. 30% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹2880 to ₹3168. By what percent did it go up?
  18. 18.The price of a bicycle is ₹2480. It goes up by 25%. What is the new price (in ₹)?
  19. 19.The price of a school bag changes from ₹1540 to ₹1155. By what percent did it come down?
  20. 20.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  21. 21.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  22. 22.A water tank holds 1400 litres. 10% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹380 to ₹418. By what percent did it go up?
  24. 24.A water tank holds 3660 litres. 25% of the water is used. How many litres are left?
  25. 25.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
  26. 26.The price of a school bag changes from ₹3720 to ₹3162. By what percent did it come down?
  27. 27.A water tank holds 3320 litres. 20% of the water is used. How many litres are left?
  28. 28.A price goes up by 20% and then goes up by 25% more. By what percent has it gone up in all? =
  29. 29.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  30. 30.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  31. 31.A town has 3900 people. Its population grows by 50%. How many people live there now?
  32. 32.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  33. 33.A town has 1520 people. Its population grows by 20%. How many people live there now?
  34. 34.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  35. 35.A water tank holds 2060 litres. 5% of the water is used. How many litres are left?
  36. 36.The price of a school bag changes from ₹1500 to ₹1350. By what percent did it come down?
  37. 37.A water tank holds 340 litres. 10% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹1820 to ₹2730. By what percent did it go up?
  39. 39.A shop sells 4940 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  40. 40.The price of a school bag changes from ₹3120 to ₹1560. By what percent did it come down?

Answer key

  1. 2340
  2. 10
  3. 2324
  4. 2440
  5. 3128
  6. 10
  7. 30
  8. 2652
  9. 260
  10. 40
  11. 36.5
  12. 3120
  13. 4142
  14. 1950
  15. 2100
  16. 1764
  17. 10
  18. 3100
  19. 25
  20. 95
  21. 46
  22. 1260
  23. 10
  24. 2745
  25. 64
  26. 15
  27. 2656
  28. 50
  29. 19.25
  30. 4
  31. 5850
  32. 10.25
  33. 1824
  34. 65
  35. 1957
  36. 10
  37. 306
  38. 50
  39. 5681
  40. 50

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