Question 483206
Ship’s Data
Speed = 30mph
Traveled time = 6 hours
Distance  = Time  * Speed
Distance  = 6*30
Distance  = 180m

Ship covers 180m to catch up with the boat.

Therefore boat has also traveled 180m.

Boat Data
Speed = 18mph 
Time = ?
Distance =180m
Distance =Time traveled * Speed
180=Time * 18
Divide by 18 both sides
180/18=(Time *18)/18
10=Time 
Time traveled= 10 hours

The fishing boat traveled for 10 hours.