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In a triangle , if $r_1=2 r_2=3 r_3$, then $\large\frac{a}{b}+\frac{b}{c}+\frac{c}{a}$$=$

\[\begin {array} {1 1} (1)\;\frac{75}{60} & \quad (2)\;\frac{155}{60} \\ (3)\;\frac{176}{60} & \quad (4)\;\frac{191}{60} \end {array}\]

1 Answer

$(4)\;\frac{191}{60} $
answered Nov 7, 2013 by pady_1
 

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