In this I tried to resolve the components.
So first thing, I converted the 12kg into newtons so it would be 117.72 newtons. Then found the perpendicular distance which is to g: cos(30)x1 then multiply the answer by 117.2N to give the weight down as 102N. As the moment principle state that clockwise have to be equal to anticlockwise the vertical of the Q have to 102N then i found the tension by 102/cos(30) which will give the final answer as 118N. But this answer is not one of the choices so it is wrong.
Can someone explain to me where I have gone wrong.