hey Ramyani I am 100% sure that the question is wrong if the answer u r saying is given that the block will move.
The force is acting in the direction parallel to the wall of 15N and that too if is acted in the direction opp to the force of 40N then there is no chance of the block to move as in
either of the cases the limiting Friction force is larger than the force that is applied II or perpendiculer to the wall.
Always available for help !
But Remember Don't hesitate to ask a good Question but
Be damn serious for Questioning a weak one.