The medians AD, BE, and CF of triangle ABC intersect at the centroid G. The line through G that is parallel to BC intersects AB and AC at M and N, respectively. If the area of triangle ABC is 100, then find the area of triangle ABM.
Something's wrong here! The question calls for the area of triangle ABM, but point M is on line segment AB
It's more likely the triangle ABN ... or something else. (?!?)