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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 828 · 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 bicycle is ₹3780. It goes up by 40%. What is the new price (in ₹)?
  2. 2.A water tank holds 3100 litres. 50% of the water is used. How many litres are left?
  3. 3.A shop sells 3620 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  4. 4.A water tank holds 620 litres. 10% of the water is used. How many litres are left?
  5. 5.A water tank holds 3680 litres. 50% of the water is used. How many litres are left?
  6. 6.A water tank holds 2740 litres. 20% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹2880 to ₹4320. By what percent did it go up?
  8. 8.A water tank holds 720 litres. 25% of the water is used. How many litres are left?
  9. 9.The price of a bicycle is ₹440. It goes up by 25%. What is the new price (in ₹)?
  10. 10.A town has 2220 people. Its population grows by 5%. How many people live there now?
  11. 11.A water tank holds 880 litres. 40% of the water is used. How many litres are left?
  12. 12.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  13. 13.The price of a bicycle is ₹3860. It goes up by 50%. What is the new price (in ₹)?
  14. 14.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  15. 15.A shop sells 4320 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  16. 16.The price of a school bag changes from ₹1160 to ₹986. By what percent did it come down?
  17. 17.A water tank holds 3380 litres. 50% of the water is used. How many litres are left?
  18. 18.A water tank holds 2680 litres. 15% of the water is used. How many litres are left?
  19. 19.The price of a bicycle is ₹1720. It goes up by 25%. What is the new price (in ₹)?
  20. 20.The price of a school bag changes from ₹5000 to ₹5500. By what percent did it go up?
  21. 21.A water tank holds 3300 litres. 50% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹1940 to ₹2037. By what percent did it go up?
  23. 23.The price of a school bag changes from ₹1020 to ₹1122. By what percent did it go up?
  24. 24.The price of a bicycle is ₹320. It goes up by 40%. What is the new price (in ₹)?
  25. 25.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
  26. 26.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  27. 27.A shop sells 4100 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  28. 28.A shop sells 1860 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  29. 29.A town has 2860 people. Its population grows by 25%. How many people live there now?
  30. 30.The price of a school bag changes from ₹4440 to ₹5550. By what percent did it go up?
  31. 31.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  32. 32.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  33. 33.A town has 4760 people. Its population grows by 5%. How many people live there now?
  34. 34.The price of a school bag changes from ₹520 to ₹624. By what percent did it go up?
  35. 35.The price of a school bag changes from ₹4340 to ₹5425. By what percent did it go up?
  36. 36.A water tank holds 900 litres. 20% of the water is used. How many litres are left?
  37. 37.A water tank holds 3900 litres. 20% of the water is used. How many litres are left?
  38. 38.A water tank holds 100 litres. 40% of the water is used. How many litres are left?
  39. 39.A water tank holds 2400 litres. 10% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹200 to ₹300. By what percent did it go up?

Answer key

  1. 5292
  2. 1550
  3. 4163
  4. 558
  5. 1840
  6. 2192
  7. 50
  8. 540
  9. 550
  10. 2331
  11. 528
  12. 61
  13. 5790
  14. 55
  15. 5616
  16. 15
  17. 1690
  18. 2278
  19. 2150
  20. 10
  21. 1650
  22. 5
  23. 10
  24. 448
  25. 26
  26. 21
  27. 5740
  28. 2046
  29. 3575
  30. 25
  31. 15.5
  32. 95
  33. 4998
  34. 20
  35. 25
  36. 720
  37. 3120
  38. 60
  39. 2160
  40. 50

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