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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 307 · 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 price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  2. 2.A water tank holds 2920 litres. 20% of the water is used. How many litres are left?
  3. 3.The price of a school bag changes from ₹3940 to ₹5910. By what percent did it go up?
  4. 4.The price of a school bag changes from ₹2380 to ₹2856. By what percent did it go up?
  5. 5.The price of a school bag changes from ₹580 to ₹493. By what percent did it come down?
  6. 6.A shop sells 2300 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  7. 7.A water tank holds 4500 litres. 50% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹280 to ₹224. By what percent did it come down?
  9. 9.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  10. 10.A shop sells 160 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  11. 11.A water tank holds 1400 litres. 15% of the water is used. How many litres are left?
  12. 12.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  13. 13.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  14. 14.A water tank holds 3360 litres. 20% of the water is used. How many litres are left?
  15. 15.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  16. 16.A water tank holds 1380 litres. 5% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹2980 to ₹2384. By what percent did it come down?
  18. 18.A shop sells 4820 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  19. 19.A town has 1500 people. Its population grows by 40%. How many people live there now?
  20. 20.A shop sells 400 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  21. 21.The price of a school bag changes from ₹1020 to ₹969. By what percent did it come down?
  22. 22.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  23. 23.A water tank holds 3320 litres. 50% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹1340 to ₹1206. By what percent did it come down?
  25. 25.The price of a school bag changes from ₹3900 to ₹2925. By what percent did it come down?
  26. 26.A water tank holds 3920 litres. 10% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹1440 to ₹1152. By what percent did it come down?
  28. 28.A water tank holds 1460 litres. 25% of the water is used. How many litres are left?
  29. 29.The price of a school bag changes from ₹1340 to ₹1742. By what percent did it go up?
  30. 30.A town has 1540 people. Its population grows by 20%. How many people live there now?
  31. 31.A water tank holds 560 litres. 5% of the water is used. How many litres are left?
  32. 32.The price of a bicycle is ₹760. It goes up by 15%. What is the new price (in ₹)?
  33. 33.The price of a school bag changes from ₹3340 to ₹3507. By what percent did it go up?
  34. 34.A town has 2660 people. Its population grows by 5%. How many people live there now?
  35. 35.A water tank holds 2460 litres. 15% of the water is used. How many litres are left?
  36. 36.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  37. 37.The price of a school bag changes from ₹2640 to ₹3168. By what percent did it go up?
  38. 38.A water tank holds 920 litres. 30% of the water is used. How many litres are left?
  39. 39.The price of a bicycle is ₹4660. It goes up by 50%. What is the new price (in ₹)?
  40. 40.A water tank holds 1800 litres. 5% of the water is used. How many litres are left?

Answer key

  1. 31.25
  2. 2336
  3. 50
  4. 20
  5. 15
  6. 2990
  7. 2250
  8. 20
  9. 33.5
  10. 224
  11. 1190
  12. 4.5
  13. 95
  14. 2688
  15. 43
  16. 1311
  17. 20
  18. 6748
  19. 2100
  20. 560
  21. 5
  22. 36.5
  23. 1660
  24. 10
  25. 25
  26. 3528
  27. 20
  28. 1095
  29. 30
  30. 1848
  31. 532
  32. 874
  33. 5
  34. 2793
  35. 2091
  36. 57.5
  37. 20
  38. 644
  39. 6990
  40. 1710

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