A boat moves at a rate of 40 mph in Stillwater if the rivers current flow in a rate of 4 mph how long does it take a boat to travel 22 miles upstream?
upstream rate: 40 mph - 4 mph = 36 mph
how long: 22 miles/36 mph = 0.6 h = 36 minutes
Answer:

And simplifying we got:


Step-by-step explanation:
We want to simplify the following expression:

And we can rewrite this expression using this property for any number a:

And using this property we have:

And simplifying we got:

