# If the speed of the water is 1.5 km/h, then the speed of the boat in still water is:

A motor boat covers a certain distance downstream in a river in 3 hours. It covers the same distance upstream in 3 hours and half. If the speed of the water is 1.5 km/h, then the speed of the boat in still water is:

- 17.5 km/h
- 19 km/h
- 19.5 km/h
- 17 km/h