Torque question please help..!!?

Torque question please help ..!!?
A uniform bar of length 50 cm is observed to balance when supported at the center of the bar.
when the support is moved 8 cm away from the center , it is found that a 150 gm mass hung 12 cm from the new pivot point will again balance the rod.
what is the mass of the rod? !
3 answers 3