Civil Service Exam Reviewer · Ratio and Proportion · medium
If A : B = 1 : 5 and B : C = 4 : 3, what is A : B : C?
- 1 : 5 : 3
- 1 : 20 : 3
- 4 : 9 : 15
- 4 : 20 : 15
Answer
D. 4 : 20 : 15
Solution
Make B equal: B = LCM(5, 4) = 20. A : B : C = 4 : 20 : 15 = 4 : 20 : 15.
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