The current in a river is 1.0 meters/second. Britney swims 300 meters against the current. If she normally swims with a speed of

2.0 meters/second in still water, how long does it take her to complete the trip?

3 answers

Upstream=300 metres/(2-1)=300 s
Downstream=300/(2+1)=100 s
100 is the wrong answer
100