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A certain jar contains only b black marbles, w white

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A certain jar contains only b black marbles, w white [#permalink]  22 May 2006, 14:06
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A certain jar contains only b black marbles, w white marbles, and r red marbles. If one marble is to be chosen at random from the jar, is the probability that the marble chosen will be red greater than the probability that the marble chosen will be white?

1) r/(b+w) > w/(b+r)

2) b - w > r
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(A)

1) gives

r/(b +w) > w/(b + r)
=> r/(r + b + w) > w/(b + r + w)
=> Red has higher probability than White.

2) b - w > r
=> b > r + w
=> Black has more probability than Red and White taken together. Does not answer the query.
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