Question 4
In the diagram below, $ABC$ is a triangle, where point $M$ lies on the side $AB$, point $N$ lies on the side $BC$ and $MN\parallel AC$. It is also known that $P$ is the midpoint of $BN$, and that $BN:PC=2:5$. If the area of the triangle $MBP$ is 1 cm², what is the area, in cm², of triangle $ABC$?


Paper instruction: Give a full solution.


Paper instruction: Give a full solution.