← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 841 · 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 5% and then goes up by 30% more. By what percent has it gone up in all? =
  2. 2.The price of a bicycle is ₹3180. It goes up by 30%. What is the new price (in ₹)?
  3. 3.A shop sells 380 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  4. 4.A water tank holds 2260 litres. 5% of the water is used. How many litres are left?
  5. 5.A water tank holds 2420 litres. 10% of the water is used. How many litres are left?
  6. 6.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  7. 7.A water tank holds 2900 litres. 5% of the water is used. How many litres are left?
  8. 8.A water tank holds 4960 litres. 10% of the water is used. How many litres are left?
  9. 9.A water tank holds 4040 litres. 10% of the water is used. How many litres are left?
  10. 10.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  11. 11.The price of a school bag changes from ₹1480 to ₹1332. By what percent did it come down?
  12. 12.The price of a school bag changes from ₹640 to ₹960. By what percent did it go up?
  13. 13.A water tank holds 3680 litres. 20% of the water is used. How many litres are left?
  14. 14.A town has 3860 people. Its population grows by 5%. How many people live there now?
  15. 15.The price of a school bag changes from ₹1140 to ₹1254. By what percent did it go up?
  16. 16.The price of a school bag changes from ₹4460 to ₹4683. By what percent did it go up?
  17. 17.A water tank holds 1320 litres. 40% of the water is used. How many litres are left?
  18. 18.The price of a school bag changes from ₹1380 to ₹1242. By what percent did it come down?
  19. 19.The price of a school bag changes from ₹1600 to ₹2000. By what percent did it go up?
  20. 20.The price of a school bag changes from ₹4640 to ₹5336. By what percent did it go up?
  21. 21.The price of a bicycle is ₹2200. It goes up by 30%. What is the new price (in ₹)?
  22. 22.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  23. 23.A town has 520 people. Its population grows by 30%. How many people live there now?
  24. 24.A town has 160 people. Its population grows by 25%. How many people live there now?
  25. 25.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  26. 26.The price of a school bag changes from ₹1080 to ₹648. By what percent did it come down?
  27. 27.The price of a school bag changes from ₹1660 to ₹1328. By what percent did it come down?
  28. 28.A shop sells 1320 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  29. 29.The price of a school bag changes from ₹1960 to ₹1568. By what percent did it come down?
  30. 30.A water tank holds 840 litres. 5% of the water is used. How many litres are left?
  31. 31.A water tank holds 4320 litres. 30% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹2460 to ₹1230. By what percent did it come down?
  33. 33.The price of a bicycle is ₹280. It goes up by 15%. What is the new price (in ₹)?
  34. 34.The price of a school bag changes from ₹2160 to ₹3024. By what percent did it go up?
  35. 35.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  36. 36.A shop sells 3280 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  37. 37.A shop sells 4140 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  38. 38.A water tank holds 1780 litres. 5% of the water is used. How many litres are left?
  39. 39.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  40. 40.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =

Answer key

  1. 36.5
  2. 4134
  3. 437
  4. 2147
  5. 2178
  6. 23.5
  7. 2755
  8. 4464
  9. 3636
  10. 65
  11. 10
  12. 50
  13. 2944
  14. 4053
  15. 10
  16. 5
  17. 792
  18. 10
  19. 25
  20. 15
  21. 2860
  22. 54
  23. 676
  24. 200
  25. 47.5
  26. 40
  27. 20
  28. 1386
  29. 20
  30. 798
  31. 3024
  32. 50
  33. 322
  34. 40
  35. 40.5
  36. 4100
  37. 5382
  38. 1691
  39. 52
  40. 61

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