In a box, there are 7 red balls, x white balls and 3 green balls. A ball is drawn from the box. If the probability of getting a white ball is found to be \[\frac{\mathbf{1}}{\mathbf{3}}\] then how many white balls in the box?

In a box, there are 7 red balls, x white balls and 3 green balls.

1.	In a box, there are 7 red balls, x white balls and 3 green balls. A ball is drawn from the box. If the probability of getting a white ball is found to be \[\frac{\mathbf{1}}{\mathbf{3}}\] then how many white balls in the box?
A.	15
B.	6
C.	9
D.	5
E.	None of these
Answer» E. None of these

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In a box, there are 7 red balls, x white balls and 3 green balls. A ball is drawn from the box. If the probability of getting a white ball is found to be \[\frac{\mathbf{1}}{\mathbf{3}}\] then how many white balls in the box?

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