Distance between the man and the mirror = 2 m
Distance between the man and the chart = 3 m
Therefore,
the distance between the chart and the mirror
= distance between the man and the mirror + distance between the man and the chart
= 3 m + 2 m
= 5 m
As the new image is formed on the mirror which is 2 m apart from the man,
So 5 m + 2 m = 7 m
Therefore,
the chart seen by the patient is 7 m away from him.