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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 943 · 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 ₹1600 to ₹1520. By what percent did it come down?
  2. 2.The price of a school bag changes from ₹3540 to ₹5310. By what percent did it go up?
  3. 3.The price of a bicycle is ₹1800. It goes up by 50%. What is the new price (in ₹)?
  4. 4.A water tank holds 3240 litres. 25% of the water is used. How many litres are left?
  5. 5.A town has 4620 people. Its population grows by 15%. How many people live there now?
  6. 6.A water tank holds 1580 litres. 40% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹3860 to ₹2895. By what percent did it come down?
  8. 8.A shop sells 3480 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  9. 9.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  10. 10.A shop sells 3300 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  11. 11.The price of a school bag changes from ₹3500 to ₹2975. By what percent did it come down?
  12. 12.The price of a school bag changes from ₹680 to ₹544. By what percent did it come down?
  13. 13.A water tank holds 1820 litres. 5% of the water is used. How many litres are left?
  14. 14.A shop sells 1900 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  15. 15.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  16. 16.The price of a school bag changes from ₹900 to ₹990. By what percent did it go up?
  17. 17.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  18. 18.The price of a school bag changes from ₹680 to ₹748. By what percent did it go up?
  19. 19.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
  20. 20.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  21. 21.A water tank holds 840 litres. 40% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹4140 to ₹3933. By what percent did it come down?
  23. 23.The price of a school bag changes from ₹1940 to ₹2910. By what percent did it go up?
  24. 24.A water tank holds 460 litres. 10% of the water is used. How many litres are left?
  25. 25.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹840 to ₹588. By what percent did it come down?
  27. 27.A water tank holds 140 litres. 10% of the water is used. How many litres are left?
  28. 28.A town has 2260 people. Its population grows by 15%. How many people live there now?
  29. 29.A price comes down by 25% and then comes down by 25% more. By what percent has it come down in all? =
  30. 30.The price of a school bag changes from ₹4980 to ₹5478. By what percent did it go up?
  31. 31.A town has 660 people. Its population grows by 5%. How many people live there now?
  32. 32.A shop sells 1660 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  33. 33.The price of a school bag changes from ₹1160 to ₹1276. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹3260 to ₹2934. By what percent did it come down?
  35. 35.A water tank holds 4240 litres. 10% of the water is used. How many litres are left?
  36. 36.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  37. 37.A water tank holds 460 litres. 5% of the water is used. How many litres are left?
  38. 38.The price of a bicycle is ₹3720. It goes up by 10%. What is the new price (in ₹)?
  39. 39.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  40. 40.A town has 4460 people. Its population grows by 50%. How many people live there now?

Answer key

  1. 5
  2. 50
  3. 2700
  4. 2430
  5. 5313
  6. 948
  7. 25
  8. 4524
  9. 55
  10. 4290
  11. 15
  12. 20
  13. 1729
  14. 2280
  15. 26
  16. 10
  17. 3.5
  18. 10
  19. 62.5
  20. 54
  21. 504
  22. 5
  23. 50
  24. 414
  25. 14
  26. 30
  27. 126
  28. 2599
  29. 43.75
  30. 10
  31. 693
  32. 2490
  33. 10
  34. 10
  35. 3816
  36. 32.5
  37. 437
  38. 4092
  39. 57.5
  40. 6690

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