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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 793 · 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 ₹500. It goes up by 20%. What is the new price (in ₹)?
  2. 2.A shop sells 4260 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  3. 3.A shop sells 220 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  4. 4.The price of a school bag changes from ₹1260 to ₹1575. By what percent did it go up?
  5. 5.A water tank holds 4860 litres. 25% of the water is used. How many litres are left?
  6. 6.A shop sells 4120 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  7. 7.The price of a bicycle is ₹2020. It goes up by 30%. What is the new price (in ₹)?
  8. 8.The price of a bicycle is ₹3440. It goes up by 15%. What is the new price (in ₹)?
  9. 9.The price of a school bag changes from ₹3980 to ₹4179. By what percent did it go up?
  10. 10.A shop sells 3360 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  11. 11.The price of a bicycle is ₹3620. It goes up by 20%. What is the new price (in ₹)?
  12. 12.The price of a bicycle is ₹4780. It goes up by 15%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹2320 to ₹2900. By what percent did it go up?
  14. 14.A shop sells 1240 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  15. 15.A shop sells 940 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  16. 16.A town has 580 people. Its population grows by 20%. How many people live there now?
  17. 17.A water tank holds 540 litres. 10% of the water is used. How many litres are left?
  18. 18.The price of a bicycle is ₹240. It goes up by 10%. What is the new price (in ₹)?
  19. 19.The price of a school bag changes from ₹2680 to ₹2278. By what percent did it come down?
  20. 20.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
  21. 21.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  22. 22.A town has 3380 people. Its population grows by 40%. How many people live there now?
  23. 23.The price of a school bag changes from ₹340 to ₹391. By what percent did it go up?
  24. 24.The price of a school bag changes from ₹1640 to ₹1312. By what percent did it come down?
  25. 25.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
  26. 26.The price of a bicycle is ₹2860. It goes up by 25%. What is the new price (in ₹)?
  27. 27.A water tank holds 1240 litres. 50% of the water is used. How many litres are left?
  28. 28.A town has 3020 people. Its population grows by 40%. How many people live there now?
  29. 29.The price of a bicycle is ₹120. It goes up by 15%. What is the new price (in ₹)?
  30. 30.A water tank holds 520 litres. 10% of the water is used. How many litres are left?
  31. 31.The price of a school bag changes from ₹2140 to ₹1819. By what percent did it come down?
  32. 32.A water tank holds 1800 litres. 5% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹2620 to ₹3668. By what percent did it go up?
  34. 34.A town has 1720 people. Its population grows by 30%. How many people live there now?
  35. 35.A shop sells 3320 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  36. 36.A water tank holds 3260 litres. 25% of the water is used. How many litres are left?
  37. 37.A water tank holds 2980 litres. 5% of the water is used. How many litres are left?
  38. 38.A water tank holds 580 litres. 50% of the water is used. How many litres are left?
  39. 39.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  40. 40.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =

Answer key

  1. 600
  2. 4473
  3. 308
  4. 25
  5. 3645
  6. 5150
  7. 2626
  8. 3956
  9. 5
  10. 5040
  11. 4344
  12. 5497
  13. 25
  14. 1488
  15. 1410
  16. 696
  17. 486
  18. 264
  19. 15
  20. 18.75
  21. 60
  22. 4732
  23. 15
  24. 20
  25. 42.5
  26. 3575
  27. 620
  28. 4228
  29. 138
  30. 468
  31. 15
  32. 1710
  33. 40
  34. 2236
  35. 4316
  36. 2445
  37. 2831
  38. 290
  39. 58
  40. 3.5

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