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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 632 · 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 bicycle is ₹4520. It goes up by 10%. What is the new price (in ₹)?
  2. 2.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  3. 3.A water tank holds 160 litres. 20% of the water is used. How many litres are left?
  4. 4.The price of a bicycle is ₹1940. It goes up by 25%. What is the new price (in ₹)?
  5. 5.The price of a school bag changes from ₹3760 to ₹4324. By what percent did it go up?
  6. 6.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  7. 7.The price of a bicycle is ₹2680. It goes up by 5%. What is the new price (in ₹)?
  8. 8.The price of a school bag changes from ₹4100 to ₹2460. By what percent did it come down?
  9. 9.The price of a school bag changes from ₹960 to ₹1008. By what percent did it go up?
  10. 10.A town has 120 people. Its population grows by 10%. How many people live there now?
  11. 11.A town has 2200 people. Its population grows by 50%. How many people live there now?
  12. 12.The price of a school bag changes from ₹3000 to ₹1500. By what percent did it come down?
  13. 13.A water tank holds 1640 litres. 25% of the water is used. How many litres are left?
  14. 14.A town has 1960 people. Its population grows by 50%. How many people live there now?
  15. 15.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
  16. 16.A shop sells 3180 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  17. 17.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
  18. 18.The price of a bicycle is ₹3820. It goes up by 40%. What is the new price (in ₹)?
  19. 19.A shop sells 1520 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  20. 20.A shop sells 280 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  21. 21.The price of a school bag changes from ₹4080 to ₹5304. By what percent did it go up?
  22. 22.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  23. 23.The price of a school bag changes from ₹3580 to ₹3043. By what percent did it come down?
  24. 24.A shop sells 3820 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  25. 25.A water tank holds 260 litres. 15% of the water is used. How many litres are left?
  26. 26.A water tank holds 4560 litres. 40% of the water is used. How many litres are left?
  27. 27.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  28. 28.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
  29. 29.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  30. 30.The price of a bicycle is ₹3980. It goes up by 15%. What is the new price (in ₹)?
  31. 31.A water tank holds 3640 litres. 30% of the water is used. How many litres are left?
  32. 32.The price of a bicycle is ₹2200. It goes up by 10%. What is the new price (in ₹)?
  33. 33.A shop sells 4240 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  34. 34.A price goes up by 20% and then goes up by 25% more. By what percent has it gone up in all? =
  35. 35.The price of a bicycle is ₹1000. It goes up by 30%. What is the new price (in ₹)?
  36. 36.The price of a bicycle is ₹840. It goes up by 50%. What is the new price (in ₹)?
  37. 37.The price of a bicycle is ₹860. It goes up by 5%. What is the new price (in ₹)?
  38. 38.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  39. 39.The price of a school bag changes from ₹4200 to ₹3780. By what percent did it come down?
  40. 40.The price of a school bag changes from ₹3600 to ₹1800. By what percent did it come down?

Answer key

  1. 4972
  2. 32.25
  3. 128
  4. 2425
  5. 15
  6. 46
  7. 2814
  8. 40
  9. 5
  10. 132
  11. 3300
  12. 50
  13. 1230
  14. 2940
  15. 32
  16. 4770
  17. 125
  18. 5348
  19. 1900
  20. 308
  21. 30
  22. 46
  23. 15
  24. 4202
  25. 221
  26. 2736
  27. 95
  28. 64
  29. 57.5
  30. 4577
  31. 2548
  32. 2420
  33. 5300
  34. 50
  35. 1300
  36. 1260
  37. 903
  38. 31.25
  39. 10
  40. 50

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