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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 941 · 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 160 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  2. 2.The price of a school bag changes from ₹580 to ₹609. By what percent did it go up?
  3. 3.A shop sells 4640 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  4. 4.A water tank holds 3300 litres. 50% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹2120 to ₹2968. By what percent did it go up?
  6. 6.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  7. 7.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
  8. 8.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
  9. 9.A water tank holds 2920 litres. 40% of the water is used. How many litres are left?
  10. 10.A water tank holds 1220 litres. 40% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹1620 to ₹1377. By what percent did it come down?
  12. 12.The price of a bicycle is ₹3220. It goes up by 5%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹2480 to ₹1860. By what percent did it come down?
  14. 14.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  15. 15.The price of a school bag changes from ₹680 to ₹408. By what percent did it come down?
  16. 16.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  17. 17.A water tank holds 2000 litres. 30% of the water is used. How many litres are left?
  18. 18.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
  19. 19.The price of a bicycle is ₹3580. It goes up by 5%. What is the new price (in ₹)?
  20. 20.A town has 4160 people. Its population grows by 5%. How many people live there now?
  21. 21.A shop sells 4700 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  22. 22.A water tank holds 3980 litres. 30% of the water is used. How many litres are left?
  23. 23.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  24. 24.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  25. 25.The price of a bicycle is ₹4560. It goes up by 10%. What is the new price (in ₹)?
  26. 26.The price of a school bag changes from ₹1900 to ₹2090. By what percent did it go up?
  27. 27.A water tank holds 1200 litres. 50% of the water is used. How many litres are left?
  28. 28.A water tank holds 1800 litres. 10% of the water is used. How many litres are left?
  29. 29.A water tank holds 2300 litres. 15% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹1620 to ₹2430. By what percent did it go up?
  31. 31.The price of a school bag changes from ₹380 to ₹494. By what percent did it go up?
  32. 32.A shop sells 780 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  33. 33.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  34. 34.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  35. 35.A town has 1880 people. Its population grows by 5%. How many people live there now?
  36. 36.A shop sells 2820 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  37. 37.A water tank holds 4940 litres. 30% of the water is used. How many litres are left?
  38. 38.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  39. 39.A water tank holds 3360 litres. 5% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹1620 to ₹1539. By what percent did it come down?

Answer key

  1. 168
  2. 5
  3. 4872
  4. 1650
  5. 40
  6. 60
  7. 44
  8. 19
  9. 1752
  10. 732
  11. 15
  12. 3381
  13. 25
  14. 33
  15. 40
  16. 14.5
  17. 1400
  18. 37
  19. 3759
  20. 4368
  21. 5405
  22. 2786
  23. 23.5
  24. 32
  25. 5016
  26. 10
  27. 600
  28. 1620
  29. 1955
  30. 50
  31. 30
  32. 936
  33. 28.75
  34. 47.5
  35. 1974
  36. 2961
  37. 3458
  38. 54
  39. 3192
  40. 5

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