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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 699 · 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 ₹600 to ₹300. By what percent did it come down?
  2. 2.The price of a bicycle is ₹4540. It goes up by 15%. What is the new price (in ₹)?
  3. 3.A water tank holds 2800 litres. 25% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹320 to ₹368. By what percent did it go up?
  5. 5.A water tank holds 2960 litres. 10% of the water is used. How many litres are left?
  6. 6.A shop sells 4320 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  7. 7.A water tank holds 4980 litres. 15% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹4560 to ₹4332. By what percent did it come down?
  9. 9.A water tank holds 4400 litres. 5% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹3540 to ₹2124. By what percent did it come down?
  11. 11.A town has 2860 people. Its population grows by 20%. How many people live there now?
  12. 12.A town has 2200 people. Its population grows by 30%. How many people live there now?
  13. 13.A water tank holds 4540 litres. 50% of the water is used. How many litres are left?
  14. 14.A water tank holds 3960 litres. 50% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹1740 to ₹870. By what percent did it come down?
  16. 16.A water tank holds 2280 litres. 15% of the water is used. How many litres are left?
  17. 17.A town has 1080 people. Its population grows by 30%. How many people live there now?
  18. 18.A water tank holds 3480 litres. 5% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹4560 to ₹6840. By what percent did it go up?
  20. 20.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  21. 21.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  22. 22.The price of a school bag changes from ₹1340 to ₹1474. By what percent did it go up?
  23. 23.A shop sells 3280 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  24. 24.A water tank holds 2020 litres. 10% of the water is used. How many litres are left?
  25. 25.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹4920 to ₹5658. By what percent did it go up?
  27. 27.A water tank holds 3120 litres. 15% of the water is used. How many litres are left?
  28. 28.A shop sells 4980 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  29. 29.The price of a school bag changes from ₹400 to ₹240. By what percent did it come down?
  30. 30.A water tank holds 3280 litres. 20% of the water is used. How many litres are left?
  31. 31.The price of a bicycle is ₹3520. It goes up by 10%. What is the new price (in ₹)?
  32. 32.A water tank holds 3380 litres. 5% of the water is used. How many litres are left?
  33. 33.A town has 2840 people. Its population grows by 30%. How many people live there now?
  34. 34.A water tank holds 2860 litres. 50% of the water is used. How many litres are left?
  35. 35.A water tank holds 4520 litres. 25% of the water is used. How many litres are left?
  36. 36.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  37. 37.A water tank holds 2580 litres. 25% of the water is used. How many litres are left?
  38. 38.The price of a bicycle is ₹400. It goes up by 40%. What is the new price (in ₹)?
  39. 39.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =
  40. 40.The price of a school bag changes from ₹3540 to ₹1770. By what percent did it come down?

Answer key

  1. 50
  2. 5221
  3. 2100
  4. 15
  5. 2664
  6. 5616
  7. 4233
  8. 5
  9. 4180
  10. 40
  11. 3432
  12. 2860
  13. 2270
  14. 1980
  15. 50
  16. 1938
  17. 1404
  18. 3306
  19. 50
  20. 57.5
  21. 82
  22. 10
  23. 4920
  24. 1818
  25. 43
  26. 15
  27. 2652
  28. 5229
  29. 40
  30. 2624
  31. 3872
  32. 3211
  33. 3692
  34. 1430
  35. 3390
  36. 43
  37. 1935
  38. 560
  39. 36.25
  40. 50

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