Posted by **Jonathan** on Sunday, June 18, 2006 at 12:28pm.

how would you solve:

the current in the river flowed at 3 mph. The boat could travel 24 mph downstream in half the time it took to travel 12 mi upstream. what was the speed of the boat in still water?

please help.

The time required to go any distance upstream a distance L is L/(12 - V) and the time to go downstream is

L/(12 + V),

where V is the speed of the water in the river.

Since L/(12-V) = 2 L/(12+V),

then 12 + V = 2 (12 - V)

Solve for V. L cancels out.

## Answer This Question

## Related Questions

- Algebra - A riverboat cruise line has a boat that can travel 76 mi downstream in...
- Algebra - Shoreline Travel operates a 3hr paddle boat cruise on the Missouri ...
- Math! Algebra 1! - A boat is traveling in a river with a current that has a ...
- math - The speed of a river current is 4 mph. IF a boat travels 20 miles ...
- Algebra - A kayak moves at a rate of 10 mph in still water. If the river's ...
- Math - 1.A tour boat on a river traveled 40 miles downstream in 4 hours. The ...
- Math - JJ's boat will go 15 mph in still water. If he can go 12 mph downstream ...
- Help...More Math Help!!!...Please! - A kayaker paddled 2 hours with a 6 mph ...
- algebra-NOW PLEASE - A boat is traveling in a river with a current that has a ...
- math(algebra) - a boat can travel at a speed of 15 kph in still water. the boat ...

More Related Questions