Thursday

July 31, 2014

July 31, 2014

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

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?

- Math word problem check -
**Reiny**, Sunday, November 9, 2008 at 2:55pmYour equation is correct, but when I solve it I got 20 km/h

(and 20 satisfies the equation, 10 does not)

- Math word problem check -
**Shawn**, Sunday, November 9, 2008 at 3:26pmoh okay thanks.

**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...

Maths - A river flows at 3km/h. At what speed must a boat travel in order to ...

math - Erin takes a total of 5 hours in her boat to travel a distance upriver ...

Math - A boat travels 12 miles up a river, then returns to where it started. The...

Algebra - Shoreline Travel operates a 3hr paddle boat cruise on the Missouri ...

Math - A river flows at the rate of 2 mph. If a motorboat can travel 12 miles ...