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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 384 · 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 price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  2. 2.A shop sells 4880 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  3. 3.A water tank holds 4200 litres. 50% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹3320 to ₹2988. By what percent did it come down?
  5. 5.A water tank holds 800 litres. 30% of the water is used. How many litres are left?
  6. 6.A water tank holds 860 litres. 20% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹560 to ₹504. By what percent did it come down?
  8. 8.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  9. 9.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  10. 10.A water tank holds 1940 litres. 50% of the water is used. How many litres are left?
  11. 11.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  12. 12.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  13. 13.The price of a school bag changes from ₹3540 to ₹2478. By what percent did it come down?
  14. 14.The price of a school bag changes from ₹3200 to ₹4480. By what percent did it go up?
  15. 15.A shop sells 3120 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  16. 16.The price of a school bag changes from ₹480 to ₹720. By what percent did it go up?
  17. 17.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  18. 18.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  19. 19.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  20. 20.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  21. 21.A water tank holds 4880 litres. 50% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹4800 to ₹2400. By what percent did it come down?
  23. 23.A shop sells 800 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  24. 24.A shop sells 4500 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  25. 25.A water tank holds 680 litres. 5% of the water is used. How many litres are left?
  26. 26.A water tank holds 2020 litres. 40% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹420 to ₹294. By what percent did it come down?
  28. 28.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  29. 29.A shop sells 580 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  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 shop sells 2860 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  32. 32.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  33. 33.A water tank holds 1420 litres. 15% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹2260 to ₹2147. By what percent did it come down?
  35. 35.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  36. 36.The price of a school bag changes from ₹3740 to ₹5610. By what percent did it go up?
  37. 37.A shop sells 1820 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  38. 38.The price of a school bag changes from ₹3380 to ₹3549. By what percent did it go up?
  39. 39.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
  40. 40.A water tank holds 2140 litres. 5% of the water is used. How many litres are left?

Answer key

  1. 10.25
  2. 6832
  3. 2100
  4. 10
  5. 560
  6. 688
  7. 10
  8. 57.5
  9. 52.5
  10. 970
  11. 17
  12. 4.5
  13. 30
  14. 40
  15. 3900
  16. 50
  17. 12.5
  18. 2
  19. 44
  20. 47
  21. 2440
  22. 50
  23. 1040
  24. 4950
  25. 646
  26. 1212
  27. 30
  28. 20
  29. 870
  30. 4
  31. 3575
  32. 31.25
  33. 1207
  34. 5
  35. 43
  36. 50
  37. 1911
  38. 5
  39. 44
  40. 2033

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