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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 151 · 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 ₹1000. It goes up by 20%. What is the new price (in ₹)?
  2. 2.A price comes down by 50% and then comes down by 15% more. By what percent has it come down in all? =
  3. 3.The price of a bicycle is ₹2620. It goes up by 10%. What is the new price (in ₹)?
  4. 4.The price of a bicycle is ₹1300. It goes up by 5%. What is the new price (in ₹)?
  5. 5.A shop sells 4460 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  6. 6.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  7. 7.The price of a school bag changes from ₹3180 to ₹3339. By what percent did it go up?
  8. 8.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  9. 9.A water tank holds 1520 litres. 50% of the water is used. How many litres are left?
  10. 10.A water tank holds 820 litres. 10% of the water is used. How many litres are left?
  11. 11.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  12. 12.The price of a school bag changes from ₹1620 to ₹2025. By what percent did it go up?
  13. 13.A town has 4920 people. Its population grows by 20%. How many people live there now?
  14. 14.The price of a school bag changes from ₹2960 to ₹2220. By what percent did it come down?
  15. 15.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  16. 16.The price of a school bag changes from ₹340 to ₹204. By what percent did it come down?
  17. 17.A shop sells 1840 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  18. 18.The price of a bicycle is ₹3780. It goes up by 30%. What is the new price (in ₹)?
  19. 19.A water tank holds 2460 litres. 40% of the water is used. How many litres are left?
  20. 20.A water tank holds 3340 litres. 30% of the water is used. How many litres are left?
  21. 21.A water tank holds 1240 litres. 20% of the water is used. How many litres are left?
  22. 22.The price of a bicycle is ₹3760. It goes up by 25%. What is the new price (in ₹)?
  23. 23.A water tank holds 4520 litres. 5% of the water is used. How many litres are left?
  24. 24.A water tank holds 4900 litres. 25% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹1480. It goes up by 10%. What is the new price (in ₹)?
  26. 26.A water tank holds 4800 litres. 20% of the water is used. How many litres are left?
  27. 27.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  28. 28.A shop sells 920 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  29. 29.The price of a bicycle is ₹1260. It goes up by 10%. What is the new price (in ₹)?
  30. 30.The price of a bicycle is ₹2000. It goes up by 10%. What is the new price (in ₹)?
  31. 31.A water tank holds 1420 litres. 40% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹660 to ₹924. By what percent did it go up?
  33. 33.The price of a bicycle is ₹2060. It goes up by 20%. What is the new price (in ₹)?
  34. 34.A shop sells 3600 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  35. 35.The price of a school bag changes from ₹1240 to ₹868. By what percent did it come down?
  36. 36.A water tank holds 3500 litres. 50% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹540 to ₹378. By what percent did it come down?
  38. 38.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =
  39. 39.A water tank holds 980 litres. 20% of the water is used. How many litres are left?
  40. 40.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =

Answer key

  1. 1200
  2. 57.5
  3. 2882
  4. 1365
  5. 5352
  6. 9.25
  7. 5
  8. 46
  9. 760
  10. 738
  11. 32
  12. 25
  13. 5904
  14. 25
  15. 61
  16. 40
  17. 2760
  18. 4914
  19. 1476
  20. 2338
  21. 992
  22. 4700
  23. 4294
  24. 3675
  25. 1628
  26. 3840
  27. 37.5
  28. 1196
  29. 1386
  30. 2200
  31. 852
  32. 40
  33. 2472
  34. 5040
  35. 30
  36. 1750
  37. 30
  38. 36.25
  39. 784
  40. 110

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