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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 866 · 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 ₹1700 to ₹2550. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹3500 to ₹3850. By what percent did it go up?
  3. 3.A shop sells 660 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  4. 4.A town has 2700 people. Its population grows by 40%. How many people live there now?
  5. 5.A shop sells 2340 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  6. 6.A town has 1380 people. Its population grows by 20%. How many people live there now?
  7. 7.A water tank holds 4860 litres. 40% of the water is used. How many litres are left?
  8. 8.A water tank holds 4980 litres. 40% of the water is used. How many litres are left?
  9. 9.A shop sells 2380 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  10. 10.The price of a bicycle is ₹3380. It goes up by 5%. What is the new price (in ₹)?
  11. 11.The price of a school bag changes from ₹1360 to ₹680. By what percent did it come down?
  12. 12.The price of a bicycle is ₹540. It goes up by 10%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹4560 to ₹5928. By what percent did it go up?
  14. 14.The price of a bicycle is ₹520. It goes up by 5%. What is the new price (in ₹)?
  15. 15.The price of a bicycle is ₹4380. It goes up by 40%. What is the new price (in ₹)?
  16. 16.The price of a school bag changes from ₹3520 to ₹2816. By what percent did it come down?
  17. 17.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  18. 18.The price of a school bag changes from ₹3420 to ₹2736. By what percent did it come down?
  19. 19.The price of a school bag changes from ₹3700 to ₹4810. By what percent did it go up?
  20. 20.The price of a school bag changes from ₹2080 to ₹1456. By what percent did it come down?
  21. 21.The price of a school bag changes from ₹3240 to ₹3402. By what percent did it go up?
  22. 22.A town has 2260 people. Its population grows by 30%. How many people live there now?
  23. 23.A water tank holds 3240 litres. 10% of the water is used. How many litres are left?
  24. 24.A water tank holds 2100 litres. 25% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹2160 to ₹2700. By what percent did it go up?
  26. 26.The price of a school bag changes from ₹4500 to ₹6750. By what percent did it go up?
  27. 27.A water tank holds 2860 litres. 15% of the water is used. How many litres are left?
  28. 28.The price of a bicycle is ₹3740. It goes up by 10%. What is the new price (in ₹)?
  29. 29.The price of a bicycle is ₹160. It goes up by 25%. What is the new price (in ₹)?
  30. 30.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  31. 31.A water tank holds 4240 litres. 20% of the water is used. How many litres are left?
  32. 32.A town has 740 people. Its population grows by 30%. How many people live there now?
  33. 33.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
  34. 34.A water tank holds 4900 litres. 30% of the water is used. How many litres are left?
  35. 35.The price of a bicycle is ₹380. It goes up by 50%. What is the new price (in ₹)?
  36. 36.A town has 420 people. Its population grows by 10%. How many people live there now?
  37. 37.A water tank holds 1640 litres. 50% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹3900 to ₹5850. By what percent did it go up?
  39. 39.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  40. 40.The price of a school bag changes from ₹1340 to ₹1206. By what percent did it come down?

Answer key

  1. 50
  2. 10
  3. 693
  4. 3780
  5. 3042
  6. 1656
  7. 2916
  8. 2988
  9. 2975
  10. 3549
  11. 50
  12. 594
  13. 30
  14. 546
  15. 6132
  16. 20
  17. 38
  18. 20
  19. 30
  20. 30
  21. 5
  22. 2938
  23. 2916
  24. 1575
  25. 25
  26. 50
  27. 2431
  28. 4114
  29. 200
  30. 36.5
  31. 3392
  32. 962
  33. 64
  34. 3430
  35. 570
  36. 462
  37. 820
  38. 50
  39. 23.5
  40. 10

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