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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 683 · 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 school bag changes from ₹3680 to ₹3496. By what percent did it come down?
  2. 2.A water tank holds 80 litres. 25% of the water is used. How many litres are left?
  3. 3.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  4. 4.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  5. 5.A shop sells 840 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  6. 6.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
  7. 7.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  8. 8.The price of a school bag changes from ₹1220 to ₹1403. By what percent did it go up?
  9. 9.A town has 2500 people. Its population grows by 5%. How many people live there now?
  10. 10.The price of a school bag changes from ₹1940 to ₹1164. By what percent did it come down?
  11. 11.The price of a school bag changes from ₹1820 to ₹2184. By what percent did it go up?
  12. 12.The price of a school bag changes from ₹2540 to ₹2032. By what percent did it come down?
  13. 13.A water tank holds 4660 litres. 15% of the water is used. How many litres are left?
  14. 14.A water tank holds 1480 litres. 10% of the water is used. How many litres are left?
  15. 15.A water tank holds 4860 litres. 15% of the water is used. How many litres are left?
  16. 16.The price of a school bag changes from ₹4740 to ₹4503. By what percent did it come down?
  17. 17.The price of a school bag changes from ₹3480 to ₹5220. By what percent did it go up?
  18. 18.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  19. 19.A shop sells 4740 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  20. 20.A water tank holds 4100 litres. 5% of the water is used. How many litres are left?
  21. 21.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  22. 22.The price of a school bag changes from ₹1740 to ₹1479. By what percent did it come down?
  23. 23.The price of a bicycle is ₹3420. It goes up by 15%. What is the new price (in ₹)?
  24. 24.A shop sells 760 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  25. 25.A town has 3040 people. Its population grows by 5%. How many people live there now?
  26. 26.A town has 4760 people. Its population grows by 10%. How many people live there now?
  27. 27.A town has 920 people. Its population grows by 20%. How many people live there now?
  28. 28.A town has 1840 people. Its population grows by 50%. How many people live there now?
  29. 29.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  30. 30.The price of a bicycle is ₹680. It goes up by 20%. What is the new price (in ₹)?
  31. 31.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  32. 32.A shop sells 2360 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  33. 33.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  34. 34.A shop sells 2680 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  35. 35.The price of a bicycle is ₹860. It goes up by 30%. What is the new price (in ₹)?
  36. 36.A water tank holds 3180 litres. 40% of the water is used. How many litres are left?
  37. 37.A water tank holds 2520 litres. 30% of the water is used. How many litres are left?
  38. 38.A water tank holds 4780 litres. 50% of the water is used. How many litres are left?
  39. 39.A shop sells 3200 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  40. 40.A town has 1300 people. Its population grows by 40%. How many people live there now?

Answer key

  1. 5
  2. 60
  3. 46
  4. 47.5
  5. 882
  6. 55
  7. 12
  8. 15
  9. 2625
  10. 40
  11. 20
  12. 20
  13. 3961
  14. 1332
  15. 4131
  16. 5
  17. 50
  18. 52
  19. 6636
  20. 3895
  21. 26.5
  22. 15
  23. 3933
  24. 1064
  25. 3192
  26. 5236
  27. 1104
  28. 2760
  29. 52.5
  30. 816
  31. 43
  32. 3068
  33. 20
  34. 4020
  35. 1118
  36. 1908
  37. 1764
  38. 2390
  39. 4160
  40. 1820

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