← Ratio and proportion lesson New set →

Ratio and Proportion Worksheet

Quantitative aptitude lesson 8: Ratio and proportion · Set 773 · 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 3 : 1. There are 15 boys. How many girls are there?
  2. 2.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  3. 3.Divide ₹234 between Zoya and Tara in the ratio 7 : 6. How much does Zoya get (in ₹)?
  4. 4.Find the third proportional to 4 and 16 (that is, 4 : 16 = 16 : ?).
  5. 5.Find the third proportional to 8 and 16 (that is, 8 : 16 = 16 : ?).
  6. 6.Divide ₹378 between Rahul and Vivaan in the ratio 1 : 6. How much does Vivaan get (in ₹)?
  7. 7.Find the third proportional to 9 and 18 (that is, 9 : 18 = 18 : ?).
  8. 8.9 : 2 = 18 : ?
  9. 9.The ratio of boys to girls in a class is 5 : 1. There are 30 boys. How many girls are there?
  10. 10.Divide ₹230 between Sneha and Ananya in the ratio 2 : 3. How much does Sneha get (in ₹)?
  11. 11.Divide ₹126 between Arjun and Vivaan in the ratio 6 : 1. How much does Vivaan get (in ₹)?
  12. 12.6 : 4 = 12 : ?
  13. 13.11 : 14 = 33 : ?
  14. 14.Find the third proportional to 6 and 24 (that is, 6 : 24 = 24 : ?).
  15. 15.The ratio of boys to girls in a class is 4 : 1. There are 12 boys. How many girls are there?
  16. 16.Find the third proportional to 4 and 20 (that is, 4 : 20 = 20 : ?).
  17. 17.Divide ₹338 between Zoya and Meera in the ratio 4 : 9. How much does Zoya get (in ₹)?
  18. 18.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  19. 19.7 : 4 = 28 : ?
  20. 20.The ratio of boys to girls in a class is 3 : 1. There are 18 boys. How many girls are there?
  21. 21.3 : 11 = 12 : ?
  22. 22.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  23. 23.2 : 3 = 10 : ?
  24. 24.6 : 14 = 48 : ?
  25. 25.Find the third proportional to 8 and 40 (that is, 8 : 40 = 40 : ?).
  26. 26.The ratio of boys to girls in a class is 8 : 5. There are 32 boys. How many girls are there?
  27. 27.9 : 15 = 27 : ?
  28. 28.5 : 10 = 35 : ?
  29. 29.Find the third proportional to 9 and 36 (that is, 9 : 36 = 36 : ?).
  30. 30.The ratio of boys to girls in a class is 1 : 2. There are 3 boys. How many girls are there?
  31. 31.Divide ₹576 between Ananya and Kavya in the ratio 7 : 9. How much does Ananya get (in ₹)?
  32. 32.Find the third proportional to 7 and 28 (that is, 7 : 28 = 28 : ?).
  33. 33.Divide ₹550 between Aditya and Kabir in the ratio 6 : 5. How much does Aditya get (in ₹)?
  34. 34.Find the third proportional to 3 and 12 (that is, 3 : 12 = 12 : ?).
  35. 35.Divide ₹294 between Priya and Aarav in the ratio 1 : 5. How much does Aarav get (in ₹)?
  36. 36.The ratio of boys to girls in a class is 8 : 3. There are 48 boys. How many girls are there?
  37. 37.Find the third proportional to 5 and 15 (that is, 5 : 15 = 15 : ?).
  38. 38.2 : 12 = 10 : ?
  39. 39.The ratio of boys to girls in a class is 8 : 7. There are 40 boys. How many girls are there?
  40. 40.4 : 6 = 16 : ?

Answer key

  1. 5
  2. 75
  3. 126
  4. 64
  5. 32
  6. 324
  7. 36
  8. 4
  9. 6
  10. 92
  11. 18
  12. 8
  13. 42
  14. 96
  15. 3
  16. 100
  17. 104
  18. 32
  19. 16
  20. 6
  21. 44
  22. 225
  23. 15
  24. 112
  25. 200
  26. 20
  27. 45
  28. 70
  29. 144
  30. 6
  31. 252
  32. 112
  33. 300
  34. 48
  35. 245
  36. 18
  37. 45
  38. 60
  39. 35
  40. 24

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