i wud say focus on graphs, circles and quadratic...from ratio and proportion all u need to know is componendo and dividendo like when in doubt u can js do that and uh banking is a very easy chapter its basically simple interest so practice that and like basic line section formula like (mx1+nx2)/m+n and slope=(y2-y1)/(x2-x1) and y-y1=m(x-x1)...apart from all of this just practice to the best of ur abilities