A 2.00kg particle has xy coordinates (-1.20m, 0.50m), and a 4.00kg particle has xy coordinates (0.60m, -0.75m). Both lie on a horizontal plane. At what xy coordinates must you place a 3.00kg particle such that the center of mass of the three-particle system has the coordinates (-0.50m, 0.70m)?
a) (-0.75m, 0.60m)
b) (0.75m, -0.60m)
c) (-0.60m, 0.75m)
d) (0.60m, -0.75m)