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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 172 · 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 4720 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  2. 2.The price of a school bag changes from ₹3440 to ₹4128. By what percent did it go up?
  3. 3.A shop sells 4180 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  4. 4.The price of a school bag changes from ₹4140 to ₹4347. By what percent did it go up?
  5. 5.The price of a school bag changes from ₹4500 to ₹6750. By what percent did it go up?
  6. 6.The price of a school bag changes from ₹600 to ₹570. By what percent did it come down?
  7. 7.The price of a school bag changes from ₹4820 to ₹5061. By what percent did it go up?
  8. 8.A shop sells 4820 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  9. 9.A shop sells 2200 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  10. 10.A shop sells 4520 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  11. 11.A town has 2120 people. Its population grows by 20%. How many people live there now?
  12. 12.A water tank holds 740 litres. 40% of the water is used. How many litres are left?
  13. 13.A shop sells 2140 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  14. 14.A price comes down by 50% and then comes down by 15% more. By what percent has it come down in all? =
  15. 15.The price of a school bag changes from ₹3420 to ₹4788. By what percent did it go up?
  16. 16.A water tank holds 3980 litres. 50% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹2200 to ₹2860. By what percent did it go up?
  18. 18.A shop sells 740 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  19. 19.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
  20. 20.A water tank holds 4060 litres. 30% of the water is used. How many litres are left?
  21. 21.The price of a bicycle is ₹3660. It goes up by 20%. What is the new price (in ₹)?
  22. 22.A water tank holds 900 litres. 20% of the water is used. How many litres are left?
  23. 23.The price of a bicycle is ₹620. It goes up by 5%. What is the new price (in ₹)?
  24. 24.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  25. 25.The price of a school bag changes from ₹660 to ₹396. By what percent did it come down?
  26. 26.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  27. 27.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  28. 28.A town has 200 people. Its population grows by 40%. How many people live there now?
  29. 29.A town has 3680 people. Its population grows by 20%. How many people live there now?
  30. 30.The price of a school bag changes from ₹3740 to ₹1870. 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 water tank holds 1120 litres. 50% of the water is used. How many litres are left?
  33. 33.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  34. 34.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  35. 35.A shop sells 4760 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  36. 36.The price of a school bag changes from ₹540 to ₹270. By what percent did it come down?
  37. 37.A price comes down by 30% and then comes down by 30% more. By what percent has it come down in all? =
  38. 38.The price of a bicycle is ₹4680. It goes up by 50%. What is the new price (in ₹)?
  39. 39.A shop sells 180 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  40. 40.A town has 760 people. Its population grows by 15%. How many people live there now?

Answer key

  1. 5428
  2. 20
  3. 4389
  4. 5
  5. 50
  6. 5
  7. 5
  8. 7230
  9. 2530
  10. 4746
  11. 2544
  12. 444
  13. 3210
  14. 57.5
  15. 40
  16. 1990
  17. 30
  18. 851
  19. 49
  20. 2842
  21. 4392
  22. 720
  23. 651
  24. 32
  25. 40
  26. 36.5
  27. 21
  28. 280
  29. 4416
  30. 50
  31. 36.5
  32. 560
  33. 19.25
  34. 20.75
  35. 6188
  36. 50
  37. 51
  38. 7020
  39. 189
  40. 874

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