$\"\"$

Point masses of the system are $\"\"$ .

Point masses are situated at the points $\"\"$ and $\"\"$ .

Therefore $\"\"$ .

$\"\"$ .

Find the center of mass.

Center of mass: $\"\"$ and $\"\"$ .

Substitute corresponding values in the formula.

$\"\"$ $\"\"$

Center of mass is $\"\"$ .

$\"\"$

Center of mass is $\"\"$ .