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DS related problem - Deduction from Equations

Problem Solving — algebra and arithmetic
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by sam77 » Wed Jan 21, 2009 5:52 pm
From the 2 equations - a+b=c and ab=c, what can we infer about a or b or c's values?
What if it is a-b=c in place of first equation?
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Source: — Quantitative Reasoning |
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by DanaJ » Thu Jan 22, 2009 12:42 am
Well the first two equations give you that b - a = ab, which means that b = ab + a, with a = b/(b+1). You should post the original question. If you do, then we might be able to provide a more specific answer.
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by sam77 » Thu Jan 22, 2009 10:10 pm
Sorry, do not have the complete question. I remember these equations from a class that I took.
And I made a typo in the first equation. It should be a+b=c.
But, your deduction sure helps, Danaj. Thanks.
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