A boat going upstream on The River averages 5 mph. Going downstream, the boat averages 10 mph. Find the speed of the current and the speed of boat in still water.

A boat going upstream on The River averages 5 mph. Going downstream, the boat averages 10 mph. Find the speed of the current and the speed of boat in still water.
You can still ask an expert for help

• Questions are typically answered in as fast as 30 minutes

Solve your problem for the price of one coffee

• Math expert for every subject
• Pay only if we can solve it

Abdiel Nelson
Given that the
Average speed of the boat going upstream = 5 mph
Average speed of the boat going downstream = 10 mph
Sped of boat in still water = speed of boat in stream
$=\frac{5+10}{2}\phantom{\rule{0ex}{0ex}}=\frac{15}{2}\phantom{\rule{0ex}{0ex}}=7.5$
10 mph = 7.5 mph + speed of the current
speed of the current = 10-7.5
speed of current = 2.5 mph