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March 4, 2015

March 4, 2015

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.

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