Question

A bag contains 4 white and some red balls if the probability drawing a red ball is double that of drawing a white ball. Find the no of red balls in the bag

Answer 1

red ball=2 of white ball
2×4
8

There are 8 red balls


MARK THIS AS BRANLIEST PLEASE...

Answer 2

Answer:

let no of ball be x

p(drawing a white ball) =4/(4+x) ,and

p( drawing red ball) = x/(4+x)

; x/4+x = 2multiply 4/4+x = x(4+x) = 8(4+x)

= (x-8)(x+4) = 0 = x= 8