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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 535 · 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 school bag changes from ₹1380 to ₹1104. By what percent did it come down?
  2. 2.The price of a school bag changes from ₹2100 to ₹2205. By what percent did it go up?
  3. 3.The price of a school bag changes from ₹5000 to ₹4750. By what percent did it come down?
  4. 4.The price of a school bag changes from ₹4880 to ₹2928. By what percent did it come down?
  5. 5.The price of a school bag changes from ₹4180 to ₹6270. By what percent did it go up?
  6. 6.The price of a school bag changes from ₹2960 to ₹2220. By what percent did it come down?
  7. 7.A water tank holds 3060 litres. 20% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹540 to ₹324. By what percent did it come down?
  9. 9.A water tank holds 3180 litres. 10% of the water is used. How many litres are left?
  10. 10.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  11. 11.A water tank holds 4740 litres. 10% of the water is used. How many litres are left?
  12. 12.The price of a bicycle is ₹1620. It goes up by 50%. What is the new price (in ₹)?
  13. 13.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  14. 14.A shop sells 200 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  15. 15.The price of a school bag changes from ₹1220 to ₹1342. By what percent did it go up?
  16. 16.A shop sells 4320 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  17. 17.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  18. 18.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
  19. 19.A water tank holds 780 litres. 5% of the water is used. How many litres are left?
  20. 20.A shop sells 4420 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  21. 21.A town has 840 people. Its population grows by 15%. How many people live there now?
  22. 22.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  23. 23.The price of a school bag changes from ₹3160 to ₹4424. By what percent did it go up?
  24. 24.A town has 3780 people. Its population grows by 50%. How many people live there now?
  25. 25.The price of a school bag changes from ₹2280 to ₹2622. By what percent did it go up?
  26. 26.The price of a bicycle is ₹2520. It goes up by 25%. What is the new price (in ₹)?
  27. 27.A water tank holds 1920 litres. 40% of the water is used. How many litres are left?
  28. 28.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  29. 29.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  30. 30.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  31. 31.The price of a school bag changes from ₹1100 to ₹1210. By what percent did it go up?
  32. 32.The price of a school bag changes from ₹2960 to ₹2368. By what percent did it come down?
  33. 33.A water tank holds 2200 litres. 10% of the water is used. How many litres are left?
  34. 34.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  35. 35.The price of a school bag changes from ₹3480 to ₹3654. By what percent did it go up?
  36. 36.The price of a bicycle is ₹2140. It goes up by 25%. What is the new price (in ₹)?
  37. 37.The price of a bicycle is ₹3400. It goes up by 25%. What is the new price (in ₹)?
  38. 38.The price of a school bag changes from ₹3580 to ₹3401. By what percent did it come down?
  39. 39.A shop sells 940 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  40. 40.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =

Answer key

  1. 20
  2. 5
  3. 5
  4. 40
  5. 50
  6. 25
  7. 2448
  8. 40
  9. 2862
  10. 46
  11. 4266
  12. 2430
  13. 14.5
  14. 300
  15. 10
  16. 5184
  17. 55
  18. 26
  19. 741
  20. 4862
  21. 966
  22. 12.5
  23. 40
  24. 5670
  25. 15
  26. 3150
  27. 1152
  28. 4
  29. 43.75
  30. 47
  31. 10
  32. 20
  33. 1980
  34. 9.25
  35. 5
  36. 2675
  37. 4250
  38. 5
  39. 1316
  40. 10.25

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