To cross a river that is 1 km wide with a current of 6 km/h anovice boat skipper

To cross a river that is 1 km wide with a current of 6 km/h anovice boat skipper holds the bow of the boat perpendicular to thefar riverbank intending to cross to a point directly across theriver from the launch point. At what position will the boatactually contact the far bank? What direction should the boat havebeen headed to actually reach a point directly across from thelaunch dock? The boat is capable of making 10 km/h