I have tried to show the question in a figure
As the System is in equilibrium then
1 Net force will be zero
2 Net torque about every point will be zero
Let the length of rod be 'd' and lets calculate torque about the floor
"N\\times0+T\\times d=20\\times10\\times d\/2\\ +\\ 50\\times10\\times3d\/4\\\\\n\nT=100+375=475 N"
Force will be also zero