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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 14 · 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 ₹2060. It goes up by 5%. What is the new price (in ₹)?
  2. 2.A shop sells 2580 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  3. 3.The price of a bicycle is ₹3400. It goes up by 40%. What is the new price (in ₹)?
  4. 4.A water tank holds 2380 litres. 30% of the water is used. How many litres are left?
  5. 5.A town has 1300 people. Its population grows by 20%. How many people live there now?
  6. 6.A water tank holds 520 litres. 40% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹1620 to ₹2430. By what percent did it go up?
  8. 8.The price of a school bag changes from ₹1740 to ₹1218. By what percent did it come down?
  9. 9.A water tank holds 4100 litres. 20% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹1140 to ₹1026. By what percent did it come down?
  11. 11.A water tank holds 1420 litres. 15% of the water is used. How many litres are left?
  12. 12.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  13. 13.A water tank holds 1560 litres. 15% of the water is used. How many litres are left?
  14. 14.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  15. 15.A water tank holds 780 litres. 20% of the water is used. How many litres are left?
  16. 16.The price of a school bag changes from ₹460 to ₹414. By what percent did it come down?
  17. 17.A water tank holds 1700 litres. 15% of the water is used. How many litres are left?
  18. 18.The price of a school bag changes from ₹3600 to ₹3780. By what percent did it go up?
  19. 19.A shop sells 1580 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  20. 20.A water tank holds 4740 litres. 15% of the water is used. How many litres are left?
  21. 21.A shop sells 840 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  22. 22.A water tank holds 2180 litres. 5% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹240 to ₹276. By what percent did it go up?
  24. 24.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  25. 25.The price of a bicycle is ₹2980. It goes up by 10%. What is the new price (in ₹)?
  26. 26.The price of a school bag changes from ₹180 to ₹135. By what percent did it come down?
  27. 27.The price of a school bag changes from ₹2940 to ₹3087. By what percent did it go up?
  28. 28.A water tank holds 4180 litres. 5% of the water is used. How many litres are left?
  29. 29.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  30. 30.The price of a school bag changes from ₹4300 to ₹6450. By what percent did it go up?
  31. 31.A shop sells 1420 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  32. 32.A town has 2540 people. Its population grows by 10%. How many people live there now?
  33. 33.The price of a school bag changes from ₹220 to ₹264. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹3300 to ₹3795. By what percent did it go up?
  35. 35.A town has 3740 people. Its population grows by 10%. How many people live there now?
  36. 36.The price of a school bag changes from ₹3260 to ₹3586. By what percent did it go up?
  37. 37.A town has 300 people. Its population grows by 10%. How many people live there now?
  38. 38.The price of a school bag changes from ₹3220 to ₹4508. By what percent did it go up?
  39. 39.The price of a bicycle is ₹60. It goes up by 40%. What is the new price (in ₹)?
  40. 40.A town has 540 people. Its population grows by 15%. How many people live there now?

Answer key

  1. 2163
  2. 3612
  3. 4760
  4. 1666
  5. 1560
  6. 312
  7. 50
  8. 30
  9. 3280
  10. 10
  11. 1207
  12. 21
  13. 1326
  14. 32
  15. 624
  16. 10
  17. 1445
  18. 5
  19. 1817
  20. 4029
  21. 966
  22. 2071
  23. 15
  24. 19
  25. 3278
  26. 25
  27. 5
  28. 3971
  29. 52
  30. 50
  31. 1704
  32. 2794
  33. 20
  34. 15
  35. 4114
  36. 10
  37. 330
  38. 40
  39. 84
  40. 621

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