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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 857 · 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 50% and then goes up by 40% more. By what percent has it gone up in all? =
  2. 2.The price of a bicycle is ₹1760. It goes up by 50%. What is the new price (in ₹)?
  3. 3.A water tank holds 5000 litres. 25% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹4220 to ₹4853. By what percent did it go up?
  5. 5.A water tank holds 4200 litres. 15% of the water is used. How many litres are left?
  6. 6.The price of a bicycle is ₹80. It goes up by 25%. What is the new price (in ₹)?
  7. 7.A water tank holds 3420 litres. 25% of the water is used. How many litres are left?
  8. 8.A shop sells 300 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  9. 9.A water tank holds 4260 litres. 5% of the water is used. How many litres are left?
  10. 10.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  11. 11.A shop sells 3880 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  12. 12.A town has 2280 people. Its population grows by 50%. How many people live there now?
  13. 13.A town has 2160 people. Its population grows by 40%. How many people live there now?
  14. 14.A water tank holds 3780 litres. 30% of the water is used. How many litres are left?
  15. 15.A shop sells 2180 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  16. 16.The price of a school bag changes from ₹3000 to ₹2850. By what percent did it come down?
  17. 17.The price of a bicycle is ₹4620. It goes up by 20%. What is the new price (in ₹)?
  18. 18.A water tank holds 1220 litres. 25% of the water is used. How many litres are left?
  19. 19.A water tank holds 1320 litres. 25% of the water is used. How many litres are left?
  20. 20.A town has 1360 people. Its population grows by 50%. How many people live there now?
  21. 21.A water tank holds 3740 litres. 50% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹4700 to ₹7050. By what percent did it go up?
  23. 23.A water tank holds 1120 litres. 20% of the water is used. How many litres are left?
  24. 24.A shop sells 4940 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  25. 25.A water tank holds 3940 litres. 10% of the water is used. How many litres are left?
  26. 26.A water tank holds 2860 litres. 5% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹2680 to ₹1340. By what percent did it come down?
  28. 28.A shop sells 2540 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  29. 29.A town has 4280 people. Its population grows by 50%. How many people live there now?
  30. 30.A town has 1480 people. Its population grows by 15%. How many people live there now?
  31. 31.A shop sells 340 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  32. 32.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
  33. 33.The price of a school bag changes from ₹4360 to ₹3052. By what percent did it come down?
  34. 34.The price of a school bag changes from ₹4220 to ₹2110. By what percent did it come down?
  35. 35.The price of a school bag changes from ₹2380 to ₹2142. By what percent did it come down?
  36. 36.A shop sells 3440 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  37. 37.The price of a school bag changes from ₹920 to ₹966. By what percent did it go up?
  38. 38.The price of a school bag changes from ₹920 to ₹1012. By what percent did it go up?
  39. 39.The price of a school bag changes from ₹2180 to ₹1308. By what percent did it come down?
  40. 40.The price of a school bag changes from ₹420 to ₹504. By what percent did it go up?

Answer key

  1. 110
  2. 2640
  3. 3750
  4. 15
  5. 3570
  6. 100
  7. 2565
  8. 360
  9. 4047
  10. 32.25
  11. 5044
  12. 3420
  13. 3024
  14. 2646
  15. 2398
  16. 5
  17. 5544
  18. 915
  19. 990
  20. 2040
  21. 1870
  22. 50
  23. 896
  24. 6422
  25. 3546
  26. 2717
  27. 50
  28. 3175
  29. 6420
  30. 1702
  31. 510
  32. 70
  33. 30
  34. 50
  35. 10
  36. 4128
  37. 5
  38. 10
  39. 40
  40. 20

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