A sailboat travels 45km eastward at a speed of 20km/hr. The wind then drops, and the boat continues due east with a speed of 15km/hr for 25km.

Incomplete.

To find the total distance traveled by the sailboat, we need to calculate the distance traveled in each part of the journey separately.

In the first part of the journey, the sailboat travels 45km eastward at a speed of 20km/hr. We can calculate the time it takes for this part of the journey by dividing the distance by the speed:

Time = Distance / Speed
Time = 45km / 20km/hr
Time = 2.25 hours

So, the sailboat takes 2.25 hours to travel the first part of the journey.

In the second part of the journey, the sailboat continues due east with a speed of 15km/hr for 25km. Again, we can calculate the time it takes for this part of the journey:

Time = Distance / Speed
Time = 25km / 15km/hr
Time = 1.67 hours

So, the sailboat takes 1.67 hours to travel the second part of the journey.

To find the total distance traveled, we simply add up the distances traveled in each part of the journey:

Total Distance = Distance Part 1 + Distance Part 2
Total Distance = 45km + 25km
Total Distance = 70km

Therefore, the sailboat travels a total distance of 70km.