Civil Service Exam Reviewer · Ratio and Proportion · medium
If A : B = 2 : 4 and B : C = 3 : 7, what is A : B : C?
- 2 : 4 : 7
- 3 : 6 : 14
- 2 : 12 : 7
- 6 : 7 : 28
Answer
B. 3 : 6 : 14
Solution
Make B equal: B = LCM(4, 3) = 12. A : B : C = 6 : 12 : 28 = 3 : 6 : 14.
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