A dolphin travels a distance 20 miles up the coastline in 153 minutes. If 1 mile is equal to 1609 meters, then what is the dolphins average speed in meters/seconds rounded to the nearest tenth?

The dolphins average speed is 3.51

Explanation:

First of all, the following rules of three should be applied:

distance=32,180 meters

time= 9,180 seconds

Speed is a physical quantity that expresses the relationship between the space traveled by an object and the time used for it. That is, speed implies the change of position of an object in space within a certain amount of time and is calculated as:

So in this case the velocity is calculated as:

Solving, you get:

Speed= 3.51

The dolphins average speed is 3.51