The marks obtained by Polly and Sandy are in the ratio 3:5 and those obtained by Sandy and Willy are in the ratio of 5:2. The marks obtained by Polly and Willy are in the ratio of...?  Select the correct option.
A) 2 : 1 B) 3 : 2 C) 4 : 3 D) 5 : 4 E) 6 : 5

Rationale: "polly : sandy = 3 : 5 sandy : willy = 5 : 2 polly : sandy : willy = 3 : 5 : 2 polly : willy = 3 : 2 the answer is b ."
Answer: B