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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 62 · 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.

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  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 ₹4000. It goes up by 5%. What is the new price (in ₹)?
  3. 3.A water tank holds 2680 litres. 10% of the water is used. How many litres are left?
  4. 4.A water tank holds 2020 litres. 50% of the water is used. How many litres are left?
  5. 5.A shop sells 1820 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  6. 6.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  7. 7.The price of a bicycle is ₹3260. It goes up by 10%. What is the new price (in ₹)?
  8. 8.The price of a school bag changes from ₹4920 to ₹6150. By what percent did it go up?
  9. 9.A shop sells 2940 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  10. 10.A water tank holds 3700 litres. 5% of the water is used. How many litres are left?
  11. 11.A water tank holds 2700 litres. 5% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹440 to ₹396. By what percent did it come down?
  13. 13.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  14. 14.The price of a school bag changes from ₹3580 to ₹4296. By what percent did it go up?
  15. 15.The price of a bicycle is ₹580. It goes up by 10%. What is the new price (in ₹)?
  16. 16.The price of a school bag changes from ₹480 to ₹360. By what percent did it come down?
  17. 17.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  18. 18.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  19. 19.A shop sells 1140 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  20. 20.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  21. 21.The price of a school bag changes from ₹1040 to ₹520. By what percent did it come down?
  22. 22.A shop sells 1600 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  23. 23.The price of a school bag changes from ₹1960 to ₹1862. By what percent did it come down?
  24. 24.A town has 4520 people. Its population grows by 15%. How many people live there now?
  25. 25.The price of a bicycle is ₹1480. It goes up by 30%. What is the new price (in ₹)?
  26. 26.The price of a school bag changes from ₹940 to ₹1316. By what percent did it go up?
  27. 27.The price of a school bag changes from ₹460 to ₹368. By what percent did it come down?
  28. 28.A water tank holds 920 litres. 50% of the water is used. How many litres are left?
  29. 29.A shop sells 3000 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  30. 30.A shop sells 1740 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  31. 31.The price of a school bag changes from ₹2200 to ₹1760. By what percent did it come down?
  32. 32.A water tank holds 2660 litres. 20% of the water is used. How many litres are left?
  33. 33.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹1720 to ₹1892. By what percent did it go up?
  35. 35.A town has 4020 people. Its population grows by 5%. How many people live there now?
  36. 36.The price of a school bag changes from ₹4740 to ₹3318. By what percent did it come down?
  37. 37.The price of a school bag changes from ₹4700 to ₹3290. By what percent did it come down?
  38. 38.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  39. 39.A water tank holds 2920 litres. 25% of the water is used. How many litres are left?
  40. 40.A shop sells 2480 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?

Answer key

  1. 110
  2. 4200
  3. 2412
  4. 1010
  5. 1911
  6. 3.5
  7. 3586
  8. 25
  9. 3528
  10. 3515
  11. 2565
  12. 10
  13. 17
  14. 20
  15. 638
  16. 25
  17. 15.5
  18. 21
  19. 1425
  20. 19.25
  21. 50
  22. 2400
  23. 5
  24. 5198
  25. 1924
  26. 40
  27. 20
  28. 460
  29. 3600
  30. 2001
  31. 20
  32. 2128
  33. 26
  34. 10
  35. 4221
  36. 30
  37. 30
  38. 72.5
  39. 2190
  40. 3472

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