Question

In an opaque bag, there are several discs of different colors (red, green, blue) and different textures (smooth, rough). It is known that when a disc is randomly selected:

P(red)=0.4
P(smooth)=0.5
P(red and smooth)=0.05

A disc is randomly selected and found to be smooth. What is the approximate probability that it is also red?
A)0.05
B)0.20
C)0.1
D)0.125

Answer 1

0.20 I believe

Answer 2

wait no, im sorry I meant 0.5

Answer 3

That's what I was thinking, thank you! @ilikemath50

Answer 4

no prob :)