One ball is drawn from a box containing 3 red, 2 blue and x green balls. Find the value of x so that the probability of drawing a green ball is double that of red or blue ball.
+539 The probability of drawing a red or blue is 3+2/3+2+x
The green probability would be x/3+2+x.
Simplifying we have that 2(3+2)=x.
So 2(5)=10=x.
