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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 634 · 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 440 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  2. 2.A water tank holds 3920 litres. 15% of the water is used. How many litres are left?
  3. 3.A shop sells 1880 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  4. 4.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
  5. 5.The price of a school bag changes from ₹2820 to ₹3948. By what percent did it go up?
  6. 6.A water tank holds 1500 litres. 10% of the water is used. How many litres are left?
  7. 7.A shop sells 4160 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  8. 8.The price of a school bag changes from ₹3080 to ₹4004. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹3780 to ₹4347. By what percent did it go up?
  10. 10.The price of a bicycle is ₹2660. It goes up by 30%. What is the new price (in ₹)?
  11. 11.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
  12. 12.A shop sells 3800 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  13. 13.A water tank holds 520 litres. 5% of the water is used. How many litres are left?
  14. 14.A water tank holds 4960 litres. 15% of the water is used. How many litres are left?
  15. 15.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  16. 16.A water tank holds 4200 litres. 15% of the water is used. How many litres are left?
  17. 17.A shop sells 4620 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  18. 18.A town has 200 people. Its population grows by 5%. How many people live there now?
  19. 19.A water tank holds 3280 litres. 20% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹4760 to ₹5236. By what percent did it go up?
  21. 21.A water tank holds 1420 litres. 20% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹440 to ₹506. By what percent did it go up?
  23. 23.A shop sells 3920 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  24. 24.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  25. 25.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹3000 to ₹4200. By what percent did it go up?
  27. 27.A shop sells 2740 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  28. 28.A water tank holds 2540 litres. 15% of the water is used. How many litres are left?
  29. 29.The price of a school bag changes from ₹1240 to ₹744. By what percent did it come down?
  30. 30.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  31. 31.The price of a school bag changes from ₹4240 to ₹2544. By what percent did it come down?
  32. 32.The price of a school bag changes from ₹1840 to ₹2300. By what percent did it go up?
  33. 33.A water tank holds 260 litres. 20% of the water is used. How many litres are left?
  34. 34.The price of a bicycle is ₹3160. It goes up by 20%. What is the new price (in ₹)?
  35. 35.The price of a school bag changes from ₹1340 to ₹1407. By what percent did it go up?
  36. 36.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  37. 37.The price of a bicycle is ₹1440. It goes up by 40%. What is the new price (in ₹)?
  38. 38.A water tank holds 2760 litres. 50% of the water is used. How many litres are left?
  39. 39.The price of a bicycle is ₹1160. It goes up by 50%. What is the new price (in ₹)?
  40. 40.A water tank holds 840 litres. 40% of the water is used. How many litres are left?

Answer key

  1. 550
  2. 3332
  3. 2350
  4. 49
  5. 40
  6. 1350
  7. 5408
  8. 30
  9. 15
  10. 3458
  11. 47
  12. 5320
  13. 494
  14. 4216
  15. 23.5
  16. 3570
  17. 6930
  18. 210
  19. 2624
  20. 10
  21. 1136
  22. 15
  23. 5488
  24. 32.5
  25. 47
  26. 40
  27. 2877
  28. 2159
  29. 40
  30. 55
  31. 40
  32. 25
  33. 208
  34. 3792
  35. 5
  36. 47.5
  37. 2016
  38. 1380
  39. 1740
  40. 504

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