Posted by **Shawn** on Sunday, November 9, 2008 at 2:27pm.

The Mad River flows at a rate of 3 km/h. In order for a boat to travel 78.2 km upriver and then return in a total of 8 hr, how fast must the boat travel in still water?

what formula would be used to solve this problem?

I used the formula of

V = D/T

T = D/V, you know that

78.2/(V + 3) + 78.2/(V - 3) = 8 hr.

Solve for V, the speed of the boat in still water.

Is the answer 10 km/h?

## Answer This Question

## Related Questions

- Math word problem - The Mad River flows at a rate of 3 km/h. In order for a boat...
- Math - The mad river flows at a rate of 2 KM/H. In order for a boat to travel 79...
- math - The current river flows at rate of 4mph. In order for a boat to travel 24...
- math - Navigation. The current in a typical Mississippi River shipping route ...
- Intermediate algebra - The current in a typical mississippi river shipping route...
- physics - A boater wants to head straight across a river that has a current of 3...
- Maths - A river flows at 3km/h. At what speed must a boat travel in order to ...
- Advanced Maths (Vectors) AQA Level - A boat which can travel at 5m/s in still ...
- Advanced Maths (Vectors) AQA Level, please help? - A boat which can travel at 5m...
- Math! Algebra 1! - A boat is traveling in a river with a current that has a ...

More Related Questions