Three odd-shaped blocks of chocolate have the following masses and center-of-mass coordinates:
(1) 0.300 kg, (0.200 m,0.300 m)
(2) 0.400 kg, (0.100 m, - 0.400 m)
(3) 0.200 kg, (-0.300 m, 0.600 m)
Find the coordinates of the center of mass of the system of three chocolate blocks.