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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 400 · 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 ₹980 to ₹1225. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹3740 to ₹1870. By what percent did it come down?
  3. 3.A water tank holds 4520 litres. 30% of the water is used. How many litres are left?
  4. 4.A water tank holds 1580 litres. 5% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹3340 to ₹2672. By what percent did it come down?
  6. 6.The price of a school bag changes from ₹4460 to ₹3791. By what percent did it come down?
  7. 7.A water tank holds 4180 litres. 10% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹3240 to ₹4860. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹4080 to ₹5712. By what percent did it go up?
  10. 10.A water tank holds 4140 litres. 30% of the water is used. How many litres are left?
  11. 11.A shop sells 2740 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  12. 12.The price of a school bag changes from ₹4460 to ₹6690. By what percent did it go up?
  13. 13.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
  14. 14.The price of a school bag changes from ₹4720 to ₹6608. By what percent did it go up?
  15. 15.The price of a bicycle is ₹4860. It goes up by 5%. What is the new price (in ₹)?
  16. 16.A price comes down by 30% and then comes down by 30% more. By what percent has it come down in all? =
  17. 17.A shop sells 1920 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  18. 18.A water tank holds 1360 litres. 25% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹3480 to ₹4350. By what percent did it go up?
  20. 20.The price of a school bag changes from ₹740 to ₹1036. By what percent did it go up?
  21. 21.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  22. 22.The price of a school bag changes from ₹2160 to ₹2484. By what percent did it go up?
  23. 23.The price of a school bag changes from ₹3420 to ₹2052. By what percent did it come down?
  24. 24.A town has 1360 people. Its population grows by 40%. How many people live there now?
  25. 25.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  26. 26.A water tank holds 2800 litres. 25% of the water is used. How many litres are left?
  27. 27.A water tank holds 3720 litres. 50% of the water is used. How many litres are left?
  28. 28.A water tank holds 3800 litres. 15% of the water is used. How many litres are left?
  29. 29.A shop sells 2700 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  30. 30.A water tank holds 1200 litres. 40% of the water is used. How many litres are left?
  31. 31.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
  32. 32.The price of a bicycle is ₹4640. It goes up by 5%. What is the new price (in ₹)?
  33. 33.A shop sells 2280 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  34. 34.A shop sells 1520 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  35. 35.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  36. 36.The price of a school bag changes from ₹4820 to ₹6266. By what percent did it go up?
  37. 37.The price of a school bag changes from ₹1140 to ₹1311. By what percent did it go up?
  38. 38.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
  39. 39.A town has 4300 people. Its population grows by 20%. How many people live there now?
  40. 40.A water tank holds 4960 litres. 30% of the water is used. How many litres are left?

Answer key

  1. 25
  2. 50
  3. 3164
  4. 1501
  5. 20
  6. 15
  7. 3762
  8. 50
  9. 40
  10. 2898
  11. 3562
  12. 50
  13. 40.5
  14. 40
  15. 5103
  16. 51
  17. 2112
  18. 1020
  19. 25
  20. 40
  21. 43.75
  22. 15
  23. 40
  24. 1904
  25. 80
  26. 2100
  27. 1860
  28. 3230
  29. 3240
  30. 720
  31. 44
  32. 4872
  33. 2622
  34. 1824
  35. 12
  36. 30
  37. 15
  38. 18.75
  39. 5160
  40. 3472

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