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December 22, 2014

December 22, 2014

Posted by **Robert** on Saturday, September 22, 2007 at 4:11pm.

Ok, this is what I did:

2x+400=1050

-400=-400

-----------

2x=650

x=325

3y+400=1050

-400=-400

-----------

3y=650

y=216.6=217

I'm not sure if this is right? Can you please help me. Thanks.

- Math -
**bobpursley**, Saturday, September 22, 2007 at 4:43pmNo.

2x + 3(400-x)=1050

- Math -
**drwls**, Saturday, September 22, 2007 at 4:43pmI don't know how you came up with your original equations. You seem to be adding numbers of people (400) to dollars (1050) in the same equation. That is not allowed.

If S is the number of students and A is the number of adults,

S + A = 400

2S + 3A =1050

2S + 2A = 800

Subtract the last equation from the one above. That will give you what A is. S is 400 -A

- Math -
**Robert**, Saturday, September 22, 2007 at 4:56pmOk, I'm really confused. Where did you get 800? I don't really understand.

Is it like this:

2(S+A)=400

2S+SA=800

Is this right? If so, what do I do after this?

- Math -
- Math -
**mia**, Wednesday, October 2, 2013 at 10:13pmhow many adults were there?

- Math -
**mia**, Wednesday, October 2, 2013 at 10:17pmhow many adults were there? i don't get it at all.

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