A river flows north to south with a speed of [v1] m/s.  If a…

A river flows north to south with a speed of [v1] m/s.  If a kayak is propelled due east across this river at a speed of [v2] m/s, and the river is [d] m wide, how far downstream will the kayaker land with respect to their original position on the west bank of the river, in meters?