Answer:
Team's rowing speed in still water: 11.8 miles per hour.
Speed of the current: 3.4 miles per hour.
Step-by-step explanation:
Let r represent team's rowing speed in still water and speed of current be c.
Rowing speed with current would be and rowing speed against current would be .
We have been given that a rowing team rowed an average of 15.2 miles per hour with the current. We can represent this information in an equation as:
We are also told that rowing team rowed an average of 8.4 miles per hour against the current. We can represent this information in an equation as:
Upon adding equation (1) and (2), we will get:
Therefore, teams's rowing speed in still water was 11.8 miles per hour.
Upon substituting in equation (1), we will get:
Therefore, speed of the current was 3.4 miles per hour.