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word problem has me stumped.  TOPIC_SOLVED

I have a word problem that i cant seem to figuered out. Can someone point me in the right direction. A boat cruises 36mi against a 3mph current and 36 mi back in the direction of the same current. The round trip takes 5 hours what is the speed of the boat in still water? I have drawns pictures look ...
by mlov83
on Sun Aug 12, 2012 1:11 pm
 
Forum: Beginning Algebra
Topic: word problem has me stumped.
Replies: 7
Views: 2364

Re: word problem has me stumped.  TOPIC_SOLVED

fwt i have looked at these examples and i just cant see the relevance? I try setting up different ways but its just not making sense?.
Thanks for the response.
by mlov83
on Sun Aug 12, 2012 1:33 pm
 
Forum: Beginning Algebra
Topic: word problem has me stumped.
Replies: 7
Views: 2364

Re: word problem has me stumped.  TOPIC_SOLVED

Here is what i have so far I'm i on the rigth track?
speed of boat against stream x-3
speed of boat with stream x+3
however i think my equation is wrong.
I end up with something like this?
36/x-3 = 5 but im not sure what i should be doing about the other side of the equation
by mlov83
on Sun Aug 12, 2012 2:13 pm
 
Forum: Beginning Algebra
Topic: word problem has me stumped.
Replies: 7
Views: 2364

Re: word problem has me stumped.  TOPIC_SOLVED

ok the equation is this.
Code: Select all
36/x-3  +  36/x+3 = 5(x+3)(x-3)

hope this is helpful for someone else someday. thanks for the 1 response.
by mlov83
on Sun Aug 12, 2012 6:50 pm
 
Forum: Beginning Algebra
Topic: word problem has me stumped.
Replies: 7
Views: 2364

Re: word problem has me stumped.  TOPIC_SOLVED

(x+3)(x-3) is your lcd. Sorry i should have mentioned that in my 4 or 5th post.
when you multiply throught with the lcd
you end up with
Code: Select all
36+36 =  5(x+3)(x-3)

hope that makes sense
by mlov83
on Sun Aug 12, 2012 11:35 pm
 
Forum: Beginning Algebra
Topic: word problem has me stumped.
Replies: 7
Views: 2364

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