DK-GEORGMOHR 1992 Problem 1

A man in a rowing boat is at point A at a distance of $2$ kilometers from a straight coastline. By first rowing in to a point P and then strolling along the coast he reaches point B, which is at a distance of $5$ kilometers from C, which is the point on the coast closest to A. The man's speed at rest is $3$ kilometers per hour and his strolling speed is $5$ kilometers per hour. Decide where P should go be placed between C and B so that the man gets from A to B in the shortest possible time.