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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 557 · 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 ₹2760 to ₹3588. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹700 to ₹490. By what percent did it come down?
  3. 3.A shop sells 4120 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  4. 4.A water tank holds 3580 litres. 25% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹2260 to ₹2938. By what percent did it go up?
  6. 6.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  7. 7.The price of a school bag changes from ₹660 to ₹726. By what percent did it go up?
  8. 8.A shop sells 600 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  9. 9.A water tank holds 320 litres. 15% of the water is used. How many litres are left?
  10. 10.A water tank holds 140 litres. 15% of the water is used. How many litres are left?
  11. 11.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  12. 12.A shop sells 540 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  13. 13.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  14. 14.A water tank holds 4860 litres. 30% of the water is used. How many litres are left?
  15. 15.A town has 4160 people. Its population grows by 20%. How many people live there now?
  16. 16.The price of a school bag changes from ₹4820 to ₹5543. By what percent did it go up?
  17. 17.A town has 4740 people. Its population grows by 20%. How many people live there now?
  18. 18.A shop sells 1360 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  19. 19.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  20. 20.A water tank holds 4280 litres. 20% of the water is used. How many litres are left?
  21. 21.The price of a bicycle is ₹60. It goes up by 40%. What is the new price (in ₹)?
  22. 22.A water tank holds 3360 litres. 15% of the water is used. How many litres are left?
  23. 23.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
  24. 24.A water tank holds 2440 litres. 40% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹1400 to ₹1330. By what percent did it come down?
  26. 26.The price of a school bag changes from ₹2540 to ₹1778. By what percent did it come down?
  27. 27.A shop sells 4140 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  28. 28.The price of a school bag changes from ₹3540 to ₹3894. By what percent did it go up?
  29. 29.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  30. 30.The price of a school bag changes from ₹4820 to ₹6025. By what percent did it go up?
  31. 31.A price comes down by 20% and then comes down by 25% more. By what percent has it come down in all? =
  32. 32.The price of a school bag changes from ₹2900 to ₹4060. By what percent did it go up?
  33. 33.A water tank holds 2860 litres. 10% of the water is used. How many litres are left?
  34. 34.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  35. 35.A town has 4460 people. Its population grows by 20%. How many people live there now?
  36. 36.A water tank holds 4920 litres. 5% of the water is used. How many litres are left?
  37. 37.A water tank holds 1040 litres. 10% of the water is used. How many litres are left?
  38. 38.A shop sells 4300 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  39. 39.The price of a school bag changes from ₹4940 to ₹2964. By what percent did it come down?
  40. 40.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =

Answer key

  1. 30
  2. 30
  3. 4326
  4. 2685
  5. 30
  6. 37.5
  7. 10
  8. 840
  9. 272
  10. 119
  11. 10.25
  12. 756
  13. 80
  14. 3402
  15. 4992
  16. 15
  17. 5688
  18. 1496
  19. 54
  20. 3424
  21. 84
  22. 2856
  23. 55
  24. 1464
  25. 5
  26. 30
  27. 4554
  28. 10
  29. 26
  30. 25
  31. 40
  32. 40
  33. 2574
  34. 87.5
  35. 5352
  36. 4674
  37. 936
  38. 6020
  39. 40
  40. 82

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