Divide 72kg in a ratio of 1: 3: 5, someone plz tell me how to do this : d ; d

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .

Ya i could just need to know what type of math