question_answer

 The average of three numbers is \[\left( \mathbf{9m}+\mathbf{8} \right)\]. Two of the three numbers are \[\left( \mathbf{2m}+\mathbf{3} \right)\] and\[\left( \mathbf{4m}+\mathbf{5} \right)\]. Express the third number in terms of m in the simplest form.

A) \[9m+8\]               

B) \[~21m-16\]            

C) \[~27m+24\]           

D)  \[21m+16\]   

E) None of these