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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 904 · 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.A water tank holds 2680 litres. 25% of the water is used. How many litres are left?
  2. 2.A water tank holds 3040 litres. 10% of the water is used. How many litres are left?
  3. 3.A water tank holds 1720 litres. 40% of the water is used. How many litres are left?
  4. 4.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
  5. 5.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
  6. 6.The price of a bicycle is ₹3480. It goes up by 40%. What is the new price (in ₹)?
  7. 7.A water tank holds 3160 litres. 40% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹1080 to ₹1512. By what percent did it go up?
  9. 9.The price of a bicycle is ₹1140. It goes up by 10%. What is the new price (in ₹)?
  10. 10.The price of a school bag changes from ₹3480 to ₹3828. By what percent did it go up?
  11. 11.A water tank holds 5000 litres. 5% of the water is used. How many litres are left?
  12. 12.A town has 2400 people. Its population grows by 40%. How many people live there now?
  13. 13.The price of a school bag changes from ₹2260 to ₹2373. By what percent did it go up?
  14. 14.The price of a school bag changes from ₹2860 to ₹2002. By what percent did it come down?
  15. 15.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  16. 16.The price of a bicycle is ₹2420. It goes up by 10%. What is the new price (in ₹)?
  17. 17.A shop sells 2020 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  18. 18.The price of a bicycle is ₹1500. It goes up by 50%. What is the new price (in ₹)?
  19. 19.The price of a bicycle is ₹360. It goes up by 5%. What is the new price (in ₹)?
  20. 20.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  21. 21.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  22. 22.A shop sells 3580 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  23. 23.The price of a bicycle is ₹4080. It goes up by 5%. What is the new price (in ₹)?
  24. 24.The price of a school bag changes from ₹3000 to ₹3150. By what percent did it go up?
  25. 25.The price of a bicycle is ₹560. It goes up by 30%. What is the new price (in ₹)?
  26. 26.The price of a bicycle is ₹1660. It goes up by 5%. What is the new price (in ₹)?
  27. 27.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  28. 28.The price of a bicycle is ₹380. It goes up by 5%. What is the new price (in ₹)?
  29. 29.The price of a school bag changes from ₹3900 to ₹4095. By what percent did it go up?
  30. 30.The price of a school bag changes from ₹300 to ₹150. By what percent did it come down?
  31. 31.The price of a bicycle is ₹800. It goes up by 15%. What is the new price (in ₹)?
  32. 32.The price of a bicycle is ₹4440. It goes up by 25%. What is the new price (in ₹)?
  33. 33.A water tank holds 1400 litres. 15% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹2340 to ₹3042. By what percent did it go up?
  35. 35.A town has 1420 people. Its population grows by 40%. How many people live there now?
  36. 36.A shop sells 4240 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  37. 37.A water tank holds 260 litres. 10% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹2680 to ₹1608. By what percent did it come down?
  39. 39.A water tank holds 1620 litres. 25% of the water is used. How many litres are left?
  40. 40.A water tank holds 4980 litres. 25% of the water is used. How many litres are left?

Answer key

  1. 2010
  2. 2736
  3. 1032
  4. 40.5
  5. 6.25
  6. 4872
  7. 1896
  8. 40
  9. 1254
  10. 10
  11. 4750
  12. 3360
  13. 5
  14. 30
  15. 43
  16. 2662
  17. 3030
  18. 2250
  19. 378
  20. 96
  21. 27.5
  22. 3938
  23. 4284
  24. 5
  25. 728
  26. 1743
  27. 32
  28. 399
  29. 5
  30. 50
  31. 920
  32. 5550
  33. 1190
  34. 30
  35. 1988
  36. 4664
  37. 234
  38. 40
  39. 1215
  40. 3735

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