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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 998 · 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 ₹940 to ₹658. By what percent did it come down?
  2. 2.The price of a school bag changes from ₹620 to ₹465. By what percent did it come down?
  3. 3.A water tank holds 2460 litres. 5% of the water is used. How many litres are left?
  4. 4.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  5. 5.A price comes down by 20% and then comes down by 25% more. By what percent has it come down in all? =
  6. 6.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  7. 7.The price of a bicycle is ₹2900. It goes up by 5%. What is the new price (in ₹)?
  8. 8.A water tank holds 4660 litres. 5% of the water is used. How many litres are left?
  9. 9.A water tank holds 4060 litres. 10% of the water is used. How many litres are left?
  10. 10.A price comes down by 20% and then comes down by 20% more. By what percent has it come down in all? =
  11. 11.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  12. 12.A water tank holds 4080 litres. 50% of the water is used. How many litres are left?
  13. 13.A water tank holds 3740 litres. 10% of the water is used. How many litres are left?
  14. 14.A town has 920 people. Its population grows by 40%. How many people live there now?
  15. 15.A shop sells 4080 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  16. 16.A water tank holds 3580 litres. 5% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹2540 to ₹2413. By what percent did it come down?
  18. 18.The price of a school bag changes from ₹960 to ₹576. By what percent did it come down?
  19. 19.The price of a school bag changes from ₹4560 to ₹5016. By what percent did it go up?
  20. 20.A water tank holds 3420 litres. 30% of the water is used. How many litres are left?
  21. 21.A water tank holds 3100 litres. 5% of the water is used. How many litres are left?
  22. 22.A water tank holds 360 litres. 50% of the water is used. How many litres are left?
  23. 23.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
  24. 24.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  25. 25.The price of a school bag changes from ₹2300 to ₹2415. By what percent did it go up?
  26. 26.A water tank holds 1180 litres. 25% of the water is used. How many litres are left?
  27. 27.The price of a bicycle is ₹1120. It goes up by 15%. What is the new price (in ₹)?
  28. 28.A shop sells 640 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  29. 29.A water tank holds 680 litres. 25% of the water is used. How many litres are left?
  30. 30.The price of a bicycle is ₹4380. It goes up by 40%. What is the new price (in ₹)?
  31. 31.A shop sells 180 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  32. 32.A shop sells 1320 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  33. 33.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  34. 34.A water tank holds 4800 litres. 25% of the water is used. How many litres are left?
  35. 35.A shop sells 4280 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  36. 36.The price of a school bag changes from ₹1240 to ₹620. By what percent did it come down?
  37. 37.A water tank holds 4320 litres. 40% of the water is used. How many litres are left?
  38. 38.A water tank holds 2680 litres. 20% of the water is used. How many litres are left?
  39. 39.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  40. 40.A water tank holds 4500 litres. 25% of the water is used. How many litres are left?

Answer key

  1. 30
  2. 25
  3. 2337
  4. 80
  5. 40
  6. 20
  7. 3045
  8. 4427
  9. 3654
  10. 36
  11. 28
  12. 2040
  13. 3366
  14. 1288
  15. 4284
  16. 3401
  17. 5
  18. 40
  19. 10
  20. 2394
  21. 2945
  22. 180
  23. 58
  24. 37.5
  25. 5
  26. 885
  27. 1288
  28. 896
  29. 510
  30. 6132
  31. 216
  32. 1650
  33. 75
  34. 3600
  35. 4494
  36. 50
  37. 2592
  38. 2144
  39. 2
  40. 3375

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