Answers

2016-02-25T20:18:18+05:30
Let no of white balls be x
ATQ
More 6 balls are added = x+6
= x+6/20 = 1/2
= x+6/10 = 1
= x+6 = 10
= x = 4
0
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Hey superb !finally u'v got it thanku soo much
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