Question

A bag contains 12 balls out of which x are red rest are blue. One ball is drawn at random,

i) what is the probability that it is red?

ii) If 6 more red balls are put in the bag, the probability of drawing a red ball will be double that in part (i). Find x.

iii) Find the probability of blue ball.
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Answer 1

Answer:

x = 3

Step-by-step explanation:

1) p(red) = x/12

2) 6 more red balls put so now new red balls number = x + 6

p(red) = x + 6 / 18

A.T.Q p becomes double of first so

x/12 × 2 = x + 6 / 18

by solving it we will get x = 3