Question 424364
Let x the speed of the boat in still water.
and y the speed of the current.
When traveled against the current the speed has been x-y.
The return speed was by x+y speed.
Multiply the time by the speed and obtain the distance 96 miles.
{{{8*(x-y)=96}}}
{{{5*(x+y)=96}}}
divide the first eq. by 8
{{{x-y=12}}}
{{{5x+5y=96}}}
Multiply the same by 5
{{{5x-5y=60}}}
{{{5x+5y=96}}}
Add (and next step subtract )
10x=156
10y=36
...
x=15.6
y=3.6