SOLUTION: Tom's boat will go 15 miles per hour in still water. If he can go 12 miles downstream in the same amount of time as it takes to go 9 miles upstream, then what is the speed of th

Question 398290: Tom's boat will go 15 miles per
hour in still water. If he can go 12 miles downstream in the
same amount of time as it takes to go 9 miles upstream,
then what is the speed of the current?

Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Tom's boat will go 15 miles per
hour in still water. If he can go 12 miles downstream in the
same amount of time as it takes to go 9 miles upstream,
then what is the speed of the current?
...
speed of current = x mph
boat speed = 15 mph
...
t = d/r
t upstream = t downstream
9/(15-x)= 12/(15+x)
9(15+x)=12(15-x)
/3
3(15+x)=4(15-x)
45+3x=60-4x
3x+4x=60-45
7x=15
/7
x= 2.14 mph current speed
...
m.ananth@hotmail.ca

RELATED QUESTIONS
Junior�s boat will go 15 miles per hour in still water. If he can go 12 miles downstream (answered by ankor@dixie-net.com)

Junior's boat will go 15 miles per hour in still water. If he can go 12 miles downstream (answered by Nate,mathdude2)

Juniors boat will go 15 miles per hour in still water. If he can go 12 miles downstream... (answered by Grinnell)

Junior's boat will go 15 miles per hour in still water. if he can go 12 miles downstream... (answered by solver91311)

Junior's boat will go 15 miles per hour in still water. If he can go 12 miles downstream... (answered by nyc_function)

junior's boat will go 15 miles per hour in still water. if he can go 12 miles downstream... (answered by mananth)

Juniors boat will go 15 miles per hour in still water. If he can go 12 miles downstream... (answered by lwsshak3)

Please help. A boat will go 15 miles per hour in still water. If he can go 12 miles... (answered by ankor@dixie-net.com)

I am having a hard time figuring this word problem out. Can you please help. Upstream,... (answered by Fombitz,stanbon)