In a bag there are 6 black , 9 yellow and some white ball.A ballis randomly selected and the probability the ball is white is 1/4 find the total no of balls
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Let the number of white balls = x
=> total number of balls = 9+6+x = 15 + x
probability of getting a white ball = x/ 15+x
= 1/4 (given)
x/15+x = 1/4
4x= 15 + x
3x = 15
x= 5
the number of white balls = 5
=> total number of balls = 9+6+x = 15 + x
probability of getting a white ball = x/ 15+x
= 1/4 (given)
x/15+x = 1/4
4x= 15 + x
3x = 15
x= 5
the number of white balls = 5
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