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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 858 · 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 ₹3020 to ₹2567. By what percent did it come down?
  2. 2.The price of a bicycle is ₹3900. It goes up by 5%. What is the new price (in ₹)?
  3. 3.A water tank holds 1300 litres. 20% of the water is used. How many litres are left?
  4. 4.A water tank holds 680 litres. 10% of the water is used. How many litres are left?
  5. 5.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  6. 6.The price of a bicycle is ₹2540. It goes up by 10%. What is the new price (in ₹)?
  7. 7.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  8. 8.A water tank holds 4680 litres. 10% of the water is used. How many litres are left?
  9. 9.A price comes down by 20% and then comes down by 25% more. By what percent has it come down in all? =
  10. 10.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
  11. 11.A shop sells 380 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  12. 12.A shop sells 3400 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  13. 13.The price of a school bag changes from ₹2080 to ₹1248. By what percent did it come down?
  14. 14.The price of a school bag changes from ₹1480 to ₹1332. By what percent did it come down?
  15. 15.The price of a school bag changes from ₹3020 to ₹2869. By what percent did it come down?
  16. 16.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  17. 17.A shop sells 400 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  18. 18.A price comes down by 20% and then comes down by 20% more. By what percent has it come down in all? =
  19. 19.A water tank holds 1680 litres. 30% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹4020 to ₹4221. By what percent did it go up?
  21. 21.A town has 1860 people. Its population grows by 15%. How many people live there now?
  22. 22.A water tank holds 3240 litres. 40% of the water is used. How many litres are left?
  23. 23.A shop sells 4220 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  24. 24.The price of a school bag changes from ₹4480 to ₹3808. By what percent did it come down?
  25. 25.A water tank holds 4820 litres. 10% of the water is used. How many litres are left?
  26. 26.A price comes down by 25% and then comes down by 20% more. By what percent has it come down in all? =
  27. 27.A water tank holds 240 litres. 10% of the water is used. How many litres are left?
  28. 28.The price of a school bag changes from ₹380 to ₹304. By what percent did it come down?
  29. 29.A water tank holds 1140 litres. 5% of the water is used. How many litres are left?
  30. 30.The price of a bicycle is ₹2900. It goes up by 5%. What is the new price (in ₹)?
  31. 31.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  32. 32.A town has 4740 people. Its population grows by 30%. How many people live there now?
  33. 33.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  34. 34.A water tank holds 2560 litres. 50% of the water is used. How many litres are left?
  35. 35.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
  36. 36.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  37. 37.A water tank holds 4580 litres. 20% of the water is used. How many litres are left?
  38. 38.A water tank holds 1420 litres. 10% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹240 to ₹336. By what percent did it go up?
  40. 40.A shop sells 2740 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?

Answer key

  1. 15
  2. 4095
  3. 1040
  4. 612
  5. 26
  6. 2794
  7. 20.75
  8. 4212
  9. 40
  10. 70
  11. 456
  12. 3740
  13. 40
  14. 10
  15. 5
  16. 19.25
  17. 560
  18. 36
  19. 1176
  20. 5
  21. 2139
  22. 1944
  23. 5275
  24. 15
  25. 4338
  26. 40
  27. 216
  28. 20
  29. 1083
  30. 3045
  31. 61
  32. 6162
  33. 61
  34. 1280
  35. 38
  36. 4
  37. 3664
  38. 1278
  39. 40
  40. 3014

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