math
posted by Vanny .
If a ball is selected at random from an urn containing six red balls, six white balls, and eight blue balls, what is the probability that it will be a white ball

hint:
P(white)
=Number of white balls/total number of balls. 
i got 0.3

I don't think MathMate mean to divide the number.
 I'm guessing he say to add the total amount up, and put it as the denominator while the amount of white ball is the numerator. Then you will have your probability of picking a white ball ( Simplify if needed). 
Vanny, you are correct
6/20 = 0.3
or you can leave as 6/20 = 3/10