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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 938 · 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 2180 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  2. 2.A shop sells 3060 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  3. 3.A water tank holds 3360 litres. 10% of the water is used. How many litres are left?
  4. 4.A shop sells 840 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  5. 5.The price of a school bag changes from ₹4060 to ₹3451. By what percent did it come down?
  6. 6.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  7. 7.A water tank holds 4520 litres. 25% of the water is used. How many litres are left?
  8. 8.The price of a bicycle is ₹3000. It goes up by 50%. What is the new price (in ₹)?
  9. 9.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  10. 10.A town has 4980 people. Its population grows by 20%. How many people live there now?
  11. 11.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
  12. 12.A town has 1000 people. Its population grows by 10%. How many people live there now?
  13. 13.The price of a school bag changes from ₹4900 to ₹3675. By what percent did it come down?
  14. 14.A water tank holds 4260 litres. 5% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹280 to ₹350. By what percent did it go up?
  16. 16.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  17. 17.The price of a school bag changes from ₹940 to ₹752. By what percent did it come down?
  18. 18.The price of a school bag changes from ₹240 to ₹336. By what percent did it go up?
  19. 19.A shop sells 160 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  20. 20.The price of a school bag changes from ₹2840 to ₹1988. By what percent did it come down?
  21. 21.A water tank holds 480 litres. 40% of the water is used. How many litres are left?
  22. 22.A water tank holds 2840 litres. 20% of the water is used. How many litres are left?
  23. 23.A water tank holds 2900 litres. 25% of the water is used. How many litres are left?
  24. 24.A water tank holds 2520 litres. 40% of the water is used. How many litres are left?
  25. 25.A water tank holds 1220 litres. 25% of the water is used. How many litres are left?
  26. 26.The price of a school bag changes from ₹3120 to ₹3900. By what percent did it go up?
  27. 27.A water tank holds 2200 litres. 25% of the water is used. How many litres are left?
  28. 28.The price of a bicycle is ₹520. It goes up by 15%. What is the new price (in ₹)?
  29. 29.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  30. 30.A water tank holds 1820 litres. 15% of the water is used. How many litres are left?
  31. 31.A water tank holds 3860 litres. 40% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹3740 to ₹3927. By what percent did it go up?
  33. 33.The price of a school bag changes from ₹3540 to ₹4425. By what percent did it go up?
  34. 34.A shop sells 4260 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  35. 35.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  36. 36.The price of a school bag changes from ₹180 to ₹162. By what percent did it come down?
  37. 37.A water tank holds 1460 litres. 40% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹880 to ₹1012. By what percent did it go up?
  39. 39.The price of a school bag changes from ₹2440 to ₹1220. By what percent did it come down?
  40. 40.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =

Answer key

  1. 2398
  2. 3213
  3. 3024
  4. 966
  5. 15
  6. 27.75
  7. 3390
  8. 4500
  9. 47.5
  10. 5976
  11. 32
  12. 1100
  13. 25
  14. 4047
  15. 25
  16. 80
  17. 20
  18. 40
  19. 192
  20. 30
  21. 288
  22. 2272
  23. 2175
  24. 1512
  25. 915
  26. 25
  27. 1650
  28. 598
  29. 61
  30. 1547
  31. 2316
  32. 5
  33. 25
  34. 6390
  35. 44
  36. 10
  37. 876
  38. 15
  39. 50
  40. 46

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