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24 Jun 2007, 07:44
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please explain..
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24 Jun 2007, 08:48
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I think the answer should be C.
Stmt 1: r/(b+w) > w/(b+r)
simplifying we get,
r/(b+w) - w/(b+r) > 0
=> [(r-w)*(b-r-w)] /[(b+w)*(b+r)]
Since, (b+w)*(b+r) > 0
(r-w)*(b-r-w) must be greater than zero. INSUFFICIENT.
Stmt 2: b-w>r. INSUFFICIENT. We don't know if number of red balls is greater than the number of white balls.
Combining both,
we get (r-w)>0
=> r>w
Hence, SUFFICIENT. Answer C.
Stmt 1: r/(b+w) > w/(b+r)
simplifying we get,
r/(b+w) - w/(b+r) > 0
=> [(r-w)*(b-r-w)] /[(b+w)*(b+r)]
Since, (b+w)*(b+r) > 0
(r-w)*(b-r-w) must be greater than zero. INSUFFICIENT.
Stmt 2: b-w>r. INSUFFICIENT. We don't know if number of red balls is greater than the number of white balls.
Combining both,
we get (r-w)>0
=> r>w
Hence, SUFFICIENT. Answer C.
