← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 351 · 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 price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
  2. 2.The price of a school bag changes from ₹1140 to ₹1311. By what percent did it go up?
  3. 3.The price of a bicycle is ₹4940. It goes up by 15%. What is the new price (in ₹)?
  4. 4.A water tank holds 1620 litres. 20% of the water is used. How many litres are left?
  5. 5.The price of a bicycle is ₹200. It goes up by 25%. What is the new price (in ₹)?
  6. 6.The price of a bicycle is ₹1800. It goes up by 40%. What is the new price (in ₹)?
  7. 7.The price of a school bag changes from ₹2000 to ₹2200. By what percent did it go up?
  8. 8.A town has 460 people. Its population grows by 50%. How many people live there now?
  9. 9.A water tank holds 1520 litres. 15% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹1260 to ₹1386. By what percent did it go up?
  11. 11.The price of a school bag changes from ₹4740 to ₹4503. By what percent did it come down?
  12. 12.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
  13. 13.The price of a school bag changes from ₹4200 to ₹6300. By what percent did it go up?
  14. 14.The price of a school bag changes from ₹1300 to ₹1495. By what percent did it go up?
  15. 15.A water tank holds 4280 litres. 50% of the water is used. How many litres are left?
  16. 16.A town has 2680 people. Its population grows by 30%. How many people live there now?
  17. 17.The price of a bicycle is ₹2760. It goes up by 25%. What is the new price (in ₹)?
  18. 18.A water tank holds 3880 litres. 25% of the water is used. How many litres are left?
  19. 19.A shop sells 1580 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  20. 20.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
  21. 21.A shop sells 260 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  22. 22.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  23. 23.A shop sells 760 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  24. 24.The price of a school bag changes from ₹960 to ₹816. By what percent did it come down?
  25. 25.The price of a school bag changes from ₹540 to ₹405. By what percent did it come down?
  26. 26.The price of a bicycle is ₹5000. It goes up by 15%. What is the new price (in ₹)?
  27. 27.The price of a bicycle is ₹3900. It goes up by 40%. What is the new price (in ₹)?
  28. 28.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
  29. 29.The price of a school bag changes from ₹2280 to ₹1824. By what percent did it come down?
  30. 30.The price of a bicycle is ₹140. It goes up by 5%. What is the new price (in ₹)?
  31. 31.A water tank holds 1040 litres. 40% of the water is used. How many litres are left?
  32. 32.The price of a bicycle is ₹980. It goes up by 30%. What is the new price (in ₹)?
  33. 33.A water tank holds 60 litres. 30% of the water is used. How many litres are left?
  34. 34.A town has 4900 people. Its population grows by 30%. How many people live there now?
  35. 35.A water tank holds 3740 litres. 5% of the water is used. How many litres are left?
  36. 36.The price of a school bag changes from ₹2580 to ₹2064. By what percent did it come down?
  37. 37.The price of a school bag changes from ₹1300 to ₹1170. By what percent did it come down?
  38. 38.The price of a school bag changes from ₹680 to ₹510. By what percent did it come down?
  39. 39.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  40. 40.The price of a school bag changes from ₹2220 to ₹2886. By what percent did it go up?

Answer key

  1. 125
  2. 15
  3. 5681
  4. 1296
  5. 250
  6. 2520
  7. 10
  8. 690
  9. 1292
  10. 10
  11. 5
  12. 40.5
  13. 50
  14. 15
  15. 2140
  16. 3484
  17. 3450
  18. 2910
  19. 1817
  20. 110
  21. 325
  22. 26.5
  23. 836
  24. 15
  25. 25
  26. 5750
  27. 5460
  28. 47
  29. 20
  30. 147
  31. 624
  32. 1274
  33. 42
  34. 6370
  35. 3553
  36. 20
  37. 10
  38. 25
  39. 9.75
  40. 30

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude