Problema Solution
A boat on the Potomac River travels the same distance downstream in 2/3 hour as it does going upstream in 1 hour. If the speed of the current is 3 miles per hour, Find the speed of the boat in still water.
Answer provided by our tutors
let the speed in still water be x
speed downstream=x+3
speed upstream=x-3
acc to question
dist=speed*time
2/3*(x+3)=1*(x-3)
2x+6=3x-9
x=15