Joy kayaked up the river and then back in a total time of 6 hours. the trip was 4 miles each way. the current was difficult. if joy kayaked at a speed of 5 mph in still water, what is the speed of the current?

The speed of the current is 5 miles per hour.  

Step-by-step explanation:

Given, Joy kayaked up the river and then back in a total time of 6 hours.  

The trip was 4 miles each way.  

The current was difficult.  

Let the speed of current be 'a' miles per hour

If joy kayaked at a speed of 5 mph in still water, we have to find what is the speed of the current?

Now, we know that,

distance = speed x time

So,

Then, total time = time for up stream + time for down stream  

Now, let us use quadratic formula,  to find a value.

Then,

we can neglect – ve values of speed.

A = 5.71

correct

step-by-step explanation:

126 maybe. sorry