Three Masses Are Positioned Along the X-Axis

Multiple Choice

Three masses are positioned along the x-axis.Their masses and positions are m₁ = m with x₁ = 1 m,m₂ = 2m with x₂ = 2 m,and m₃ = 4m with x₃ = 3 m.What is the x-coordinate of the center of mass of this system,to the nearest tenth?

A) 4.7 m
B) 2.4 m
C) 2.0 m
D) 1.1 m
E) Not enough information