← Ratio and proportion lesson New set →

Ratio and Proportion Worksheet

Quantitative aptitude lesson 8: Ratio and proportion · Set 250 · 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 4 : 7. There are 40 boys. How many girls are there?
  2. 2.7 : 8 = 21 : ?
  3. 3.7 : 12 = 63 : ?
  4. 4.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  5. 5.The ratio of boys to girls in a class is 4 : 5. There are 12 boys. How many girls are there?
  6. 6.Divide ₹30 between Saanvi and Karan in the ratio 2 : 3. How much does Saanvi get (in ₹)?
  7. 7.10 : 6 = 70 : ?
  8. 8.Divide ₹396 between Aarav and Dev in the ratio 7 : 4. How much does Dev get (in ₹)?
  9. 9.Divide ₹407 between Manav and Rahul in the ratio 9 : 2. How much does Manav get (in ₹)?
  10. 10.Divide ₹272 between Aditya and Farhan in the ratio 8 : 9. How much does Farhan get (in ₹)?
  11. 11.5 : 4 = 30 : ?
  12. 12.Divide ₹350 between Diya and Karan in the ratio 5 : 9. How much does Diya get (in ₹)?
  13. 13.The ratio of boys to girls in a class is 9 : 4. There are 18 boys. How many girls are there?
  14. 14.8 : 14 = 40 : ?
  15. 15.The ratio of boys to girls in a class is 7 : 3. There are 70 boys. How many girls are there?
  16. 16.The ratio of boys to girls in a class is 9 : 4. There are 90 boys. How many girls are there?
  17. 17.The ratio of boys to girls in a class is 1 : 6. There are 3 boys. How many girls are there?
  18. 18.The ratio of boys to girls in a class is 4 : 3. There are 8 boys. How many girls are there?
  19. 19.3 : 11 = 15 : ?
  20. 20.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  21. 21.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  22. 22.7 : 15 = 35 : ?
  23. 23.Divide ₹117 between Meera and Arjun in the ratio 7 : 6. How much does Arjun get (in ₹)?
  24. 24.Divide ₹507 between Isha and Farhan in the ratio 5 : 8. How much does Farhan get (in ₹)?
  25. 25.10 : 8 = 40 : ?
  26. 26.2 : 9 = 12 : ?
  27. 27.Find the third proportional to 7 and 14 (that is, 7 : 14 = 14 : ?).
  28. 28.Divide ₹315 between Kabir and Aarav in the ratio 8 : 7. How much does Aarav get (in ₹)?
  29. 29.The ratio of boys to girls in a class is 9 : 8. There are 36 boys. How many girls are there?
  30. 30.The ratio of boys to girls in a class is 1 : 5. There are 7 boys. How many girls are there?
  31. 31.12 : 6 = 48 : ?
  32. 32.Find the third proportional to 3 and 12 (that is, 3 : 12 = 12 : ?).
  33. 33.Divide ₹208 between Zoya and Vivaan in the ratio 6 : 7. How much does Zoya get (in ₹)?
  34. 34.11 : 12 = 66 : ?
  35. 35.7 : 3 = 63 : ?
  36. 36.3 : 15 = 18 : ?
  37. 37.Divide ₹297 between Ishaan and Farhan in the ratio 8 : 3. How much does Farhan get (in ₹)?
  38. 38.Divide ₹350 between Ishaan and Manav in the ratio 9 : 1. How much does Manav get (in ₹)?
  39. 39.Divide ₹495 between Rahul and Rohan in the ratio 4 : 5. How much does Rahul get (in ₹)?
  40. 40.The ratio of boys to girls in a class is 7 : 1. There are 49 boys. How many girls are there?

Answer key

  1. 70
  2. 24
  3. 108
  4. 32
  5. 15
  6. 12
  7. 42
  8. 144
  9. 333
  10. 144
  11. 24
  12. 125
  13. 8
  14. 70
  15. 30
  16. 40
  17. 18
  18. 6
  19. 55
  20. 12
  21. 20
  22. 75
  23. 54
  24. 312
  25. 32
  26. 54
  27. 28
  28. 147
  29. 32
  30. 35
  31. 24
  32. 48
  33. 96
  34. 72
  35. 27
  36. 90
  37. 81
  38. 35
  39. 220
  40. 7

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