← Ratio and proportion lesson New set →

Ratio and Proportion Worksheet

Quantitative aptitude lesson 8: Ratio and proportion · Set 904 · 40 questions
TalentJR

The method (One part): Divide in a ratio a : b: one part = total ÷ (a + b); shares are a parts and b parts. If you know one share, one part = that share ÷ its number of parts. Proportion a : b = c : d means a × d = b × c (fourth proportional d = b × c ÷ a; third proportional to a and b is b × b ÷ a).

NameDateTime takenScore ___ / 40
  1. 1.The ratio of boys to girls in a class is 5 : 3. There are 15 boys. How many girls are there?
  2. 2.Find the third proportional to 8 and 40 (that is, 8 : 40 = 40 : ?).
  3. 3.9 : 7 = 54 : ?
  4. 4.3 : 9 = 6 : ?
  5. 5.Find the third proportional to 5 and 15 (that is, 5 : 15 = 15 : ?).
  6. 6.The ratio of boys to girls in a class is 7 : 5. There are 42 boys. How many girls are there?
  7. 7.8 : 3 = 72 : ?
  8. 8.The ratio of boys to girls in a class is 9 : 4. There are 81 boys. How many girls are there?
  9. 9.Find the third proportional to 3 and 9 (that is, 3 : 9 = 9 : ?).
  10. 10.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  11. 11.The ratio of boys to girls in a class is 5 : 3. There are 35 boys. How many girls are there?
  12. 12.Find the third proportional to 8 and 32 (that is, 8 : 32 = 32 : ?).
  13. 13.The ratio of boys to girls in a class is 9 : 5. There are 81 boys. How many girls are there?
  14. 14.Divide ₹660 between Kavya and Pooja in the ratio 2 : 9. How much does Pooja get (in ₹)?
  15. 15.8 : 7 = 56 : ?
  16. 16.The ratio of boys to girls in a class is 1 : 4. There are 10 boys. How many girls are there?
  17. 17.Find the third proportional to 5 and 25 (that is, 5 : 25 = 25 : ?).
  18. 18.5 : 13 = 15 : ?
  19. 19.The ratio of boys to girls in a class is 3 : 5. There are 15 boys. How many girls are there?
  20. 20.Divide ₹583 between Farhan and Ishaan in the ratio 9 : 2. How much does Farhan get (in ₹)?
  21. 21.The ratio of boys to girls in a class is 2 : 5. There are 8 boys. How many girls are there?
  22. 22.The ratio of boys to girls in a class is 9 : 8. There are 54 boys. How many girls are there?
  23. 23.The ratio of boys to girls in a class is 7 : 6. There are 70 boys. How many girls are there?
  24. 24.Divide ₹513 between Meera and Karan in the ratio 4 : 5. How much does Meera get (in ₹)?
  25. 25.2 : 4 = 4 : ?
  26. 26.Divide ₹121 between Meera and Kabir in the ratio 4 : 7. How much does Kabir get (in ₹)?
  27. 27.Find the third proportional to 3 and 12 (that is, 3 : 12 = 12 : ?).
  28. 28.Find the third proportional to 4 and 20 (that is, 4 : 20 = 20 : ?).
  29. 29.The ratio of boys to girls in a class is 1 : 5. There are 2 boys. How many girls are there?
  30. 30.Divide ₹216 between Zoya and Aarav in the ratio 8 : 1. How much does Zoya get (in ₹)?
  31. 31.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  32. 32.10 : 3 = 30 : ?
  33. 33.The ratio of boys to girls in a class is 3 : 4. There are 30 boys. How many girls are there?
  34. 34.The ratio of boys to girls in a class is 3 : 7. There are 27 boys. How many girls are there?
  35. 35.Divide ₹550 between Zoya and Aditya in the ratio 5 : 6. How much does Aditya get (in ₹)?
  36. 36.Find the third proportional to 6 and 24 (that is, 6 : 24 = 24 : ?).
  37. 37.The ratio of boys to girls in a class is 7 : 8. There are 28 boys. How many girls are there?
  38. 38.4 : 6 = 36 : ?
  39. 39.7 : 6 = 49 : ?
  40. 40.Divide ₹187 between Tara and Ishaan in the ratio 7 : 4. How much does Tara get (in ₹)?

Answer key

  1. 9
  2. 200
  3. 42
  4. 18
  5. 45
  6. 30
  7. 27
  8. 36
  9. 27
  10. 72
  11. 21
  12. 128
  13. 45
  14. 540
  15. 49
  16. 40
  17. 125
  18. 39
  19. 25
  20. 477
  21. 20
  22. 48
  23. 60
  24. 228
  25. 8
  26. 77
  27. 48
  28. 100
  29. 10
  30. 192
  31. 225
  32. 9
  33. 40
  34. 63
  35. 300
  36. 96
  37. 32
  38. 54
  39. 42
  40. 119

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