question_answer

The plane \[ax+by+cz=1\] meets the coordinate axes in A, B and C. The centroid of \[\Delta ABC\]is

A)  \[\left( 3a,3b,3c \right)\]  

B)  \[\left( \frac{a}{3},\frac{b}{3},\frac{c}{3} \right)\] 

C)  \[\left( \frac{3}{a},\frac{3}{b},\frac{3}{c} \right)\]          

D)  \[\left( \frac{1}{3a},\frac{1}{3b},\frac{1}{3c} \right)\]