Question

Please answer this question it's urgent

Answer 1

total balls are 20

blue balls x

p(of blue ball) = x/20

Now 10 balls which were blue are added

so , now total balls are 30

no. of blue balls =x+10

Now

p( blue balls) =( x+10)/30

given

p2 = 2× p1

x +10/30 = 2( x/20)

10x +100=30x

100 = 20x

x=5 answer

Answer 2

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