1.

If 3a = 27b = 81c and abc = 144, then the value of \(12\left( {\frac{1}{a} + \frac{1}{{2b}} + \frac{1}{{5c}}} \right)\) is:

A. 17/120
B. 18/10
C. 33/10
D. 18/120
Answer» D. 18/120


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