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August 21, 2014

August 21, 2014

Posted by **scott** on Friday, March 30, 2012 at 10:29pm.

speed of tugboat is

speed of the current is

- algebra -
**Reiny**, Friday, March 30, 2012 at 10:36pmspeed of tugboat in still water -- x

speed of current ----- y

the key is that the distance is the same

so 10(x-y) = 160 or

x - y = 16

and 5(x+y) = 160

x+y = 32

add them:::

2x = 48

x = 24 , then y = 8

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