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Kaplan math question

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Kaplan math question [#permalink] New post 09 Oct 2004, 09:01
Can anyone help explain this? I'm taking my Exam Monday, and am on Review mode.
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Re: Kaplan math question [#permalink] New post 09 Oct 2004, 11:42
Hi

Problem looks quite staright forward. You need values of two variables t and s to solve this problem and therefore C is correct.

Thanks,
sm

jeremy02 wrote:
Can anyone help explain this? I'm taking my Exam Monday, and am on Review mode.
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 [#permalink] New post 09 Oct 2004, 12:30
B
The question actually asks for total cost
r(100)+s(50)= ?. So, We need the value for r and s to get the final answer.

1. says about s, which is 4 still we don't know the value of r.
2. 2r + s = 10. If you look at the question we framed and this equation. The are proportionate. Just multiply this equation by 50, you will get the answer.
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 [#permalink] New post 09 Oct 2004, 14:10
I think i got confused by "50" this equation will work for 40, 60 etc.. Thanks for the hlep
  [#permalink] 09 Oct 2004, 14:10
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