Civil Service Exam Reviewer · Ratio and Proportion · medium
If A : B = 6 : 7 and B : C = 6 : 1, what is A : B : C?
- 6 : 7 : 1
- 6 : 42 : 1
- 36 : 42 : 7
- 36 : 13 : 7
Answer
C. 36 : 42 : 7
Solution
Make B equal: B = LCM(7, 6) = 42. A : B : C = 36 : 42 : 7 = 36 : 42 : 7.
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