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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 27 · 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 1280 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 3360 litres. 10% of the water is used. How many litres are left?
  3. 3.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  4. 4.A water tank holds 4240 litres. 5% of the water is used. How many litres are left?
  5. 5.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
  6. 6.A town has 960 people. Its population grows by 20%. How many people live there now?
  7. 7.A town has 3620 people. Its population grows by 30%. How many people live there now?
  8. 8.A shop sells 260 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  9. 9.The price of a school bag changes from ₹2240 to ₹1568. By what percent did it come down?
  10. 10.A water tank holds 1100 litres. 30% of the water is used. How many litres are left?
  11. 11.A water tank holds 4480 litres. 20% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹200 to ₹280. By what percent did it go up?
  13. 13.The price of a school bag changes from ₹2860 to ₹3146. By what percent did it go up?
  14. 14.The price of a school bag changes from ₹1120 to ₹1064. By what percent did it come down?
  15. 15.A town has 2440 people. Its population grows by 20%. How many people live there now?
  16. 16.The price of a bicycle is ₹600. It goes up by 40%. What is the new price (in ₹)?
  17. 17.A water tank holds 1860 litres. 5% of the water is used. How many litres are left?
  18. 18.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  19. 19.A water tank holds 3240 litres. 20% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹3120 to ₹2964. By what percent did it come down?
  21. 21.The price of a school bag changes from ₹1480 to ₹1628. By what percent did it go up?
  22. 22.A town has 660 people. Its population grows by 10%. How many people live there now?
  23. 23.The price of a school bag changes from ₹700 to ₹525. By what percent did it come down?
  24. 24.A water tank holds 1100 litres. 5% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹3020. It goes up by 10%. What is the new price (in ₹)?
  26. 26.A shop sells 3620 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  27. 27.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  28. 28.The price of a school bag changes from ₹160 to ₹208. By what percent did it go up?
  29. 29.A water tank holds 1940 litres. 25% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹1720 to ₹1204. By what percent did it come down?
  31. 31.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  32. 32.A town has 1140 people. Its population grows by 20%. How many people live there now?
  33. 33.The price of a bicycle is ₹4840. It goes up by 50%. What is the new price (in ₹)?
  34. 34.The price of a school bag changes from ₹140 to ₹98. By what percent did it come down?
  35. 35.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  36. 36.A water tank holds 4100 litres. 30% of the water is used. How many litres are left?
  37. 37.The price of a bicycle is ₹2180. It goes up by 40%. What is the new price (in ₹)?
  38. 38.A water tank holds 3040 litres. 40% of the water is used. How many litres are left?
  39. 39.A water tank holds 680 litres. 5% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹4040 to ₹3838. By what percent did it come down?

Answer key

  1. 1344
  2. 3024
  3. 21
  4. 4028
  5. 19
  6. 1152
  7. 4706
  8. 312
  9. 30
  10. 770
  11. 3584
  12. 40
  13. 10
  14. 5
  15. 2928
  16. 840
  17. 1767
  18. 70
  19. 2592
  20. 5
  21. 10
  22. 726
  23. 25
  24. 1045
  25. 3322
  26. 5430
  27. 40.5
  28. 30
  29. 1455
  30. 30
  31. 36.5
  32. 1368
  33. 7260
  34. 30
  35. 23.5
  36. 2870
  37. 3052
  38. 1824
  39. 646
  40. 5

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