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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 350 · 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 1060 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  2. 2.A water tank holds 1280 litres. 15% of the water is used. How many litres are left?
  3. 3.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
  4. 4.The price of a school bag changes from ₹1220 to ₹976. By what percent did it come down?
  5. 5.The price of a school bag changes from ₹1780 to ₹1335. By what percent did it come down?
  6. 6.The price of a bicycle is ₹1860. It goes up by 5%. What is the new price (in ₹)?
  7. 7.The price of a school bag changes from ₹4880 to ₹5124. By what percent did it go up?
  8. 8.A water tank holds 1360 litres. 50% of the water is used. How many litres are left?
  9. 9.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  10. 10.The price of a bicycle is ₹4840. It goes up by 50%. What is the new price (in ₹)?
  11. 11.The price of a bicycle is ₹1660. It goes up by 25%. What is the new price (in ₹)?
  12. 12.The price of a school bag changes from ₹3060 to ₹2907. By what percent did it come down?
  13. 13.A shop sells 1380 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  14. 14.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  15. 15.A water tank holds 2580 litres. 40% of the water is used. How many litres are left?
  16. 16.A shop sells 2240 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  17. 17.A water tank holds 1760 litres. 25% of the water is used. How many litres are left?
  18. 18.A water tank holds 1500 litres. 10% of the water is used. How many litres are left?
  19. 19.The price of a bicycle is ₹200. It goes up by 25%. What is the new price (in ₹)?
  20. 20.A water tank holds 60 litres. 25% of the water is used. How many litres are left?
  21. 21.A water tank holds 2300 litres. 15% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹1260 to ₹1134. By what percent did it come down?
  23. 23.A water tank holds 4920 litres. 10% of the water is used. How many litres are left?
  24. 24.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
  25. 25.A shop sells 780 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  26. 26.The price of a school bag changes from ₹3600 to ₹1800. By what percent did it come down?
  27. 27.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
  28. 28.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  29. 29.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
  30. 30.A shop sells 3000 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  31. 31.The price of a bicycle is ₹1500. It goes up by 50%. What is the new price (in ₹)?
  32. 32.The price of a school bag changes from ₹2500 to ₹2750. By what percent did it go up?
  33. 33.A water tank holds 1880 litres. 10% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹100 to ₹85. By what percent did it come down?
  35. 35.The price of a school bag changes from ₹4580 to ₹6412. By what percent did it go up?
  36. 36.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  37. 37.The price of a school bag changes from ₹720 to ₹828. By what percent did it go up?
  38. 38.A shop sells 4860 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  39. 39.A shop sells 1340 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  40. 40.A shop sells 2460 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?

Answer key

  1. 1113
  2. 1088
  3. 26
  4. 20
  5. 25
  6. 1953
  7. 5
  8. 680
  9. 38
  10. 7260
  11. 2075
  12. 5
  13. 1725
  14. 36.25
  15. 1548
  16. 2912
  17. 1320
  18. 1350
  19. 250
  20. 45
  21. 1955
  22. 10
  23. 4428
  24. 49
  25. 975
  26. 50
  27. 55
  28. 43.75
  29. 58
  30. 3750
  31. 2250
  32. 10
  33. 1692
  34. 15
  35. 40
  36. 20
  37. 15
  38. 7290
  39. 1675
  40. 2952

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