search
Q: A bag contains red, blue and black balls. The ratio of red to blue balls is 3 : 5. The ratio of black to red balls is 3 : 4. What is the ratio of blue to black balls?
  • A. 5 : 3
  • B. 4 : 5
  • C. 9 : 20
  • D. 20 : 9
Correct Answer: Option D -
answer image

Explanations:

explanation image