SOLUTION: A Jar contains 30 red marbles, 50 blue, and 20 white. You pick one marble fromt the jar at random. Find each theoretical probability. P(red) P(blue) P(not white) P(red or blue)

Algebra ->  Probability-and-statistics -> SOLUTION: A Jar contains 30 red marbles, 50 blue, and 20 white. You pick one marble fromt the jar at random. Find each theoretical probability. P(red) P(blue) P(not white) P(red or blue)      Log On


   

Question 338357: A Jar contains 30 red marbles, 50 blue, and 20 white. You pick one marble fromt the jar at random. Find each theoretical probability.
P(red)
P(blue)
P(not white)
P(red or blue)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
30 R - Red
50 B - Blue
20 W - White
100 total
P%28R%29=30%2F100=3%2F10
.
.
P%28B%29=50%2F100=1%2F2
.
.
P%28not+W%29%2BP%28W%29=1
P%28not+W%29=1-P%28W%29=1-20%2F100=80%2F100=4%2F5
.
.
P%28R+or+B%29=P%28R%29%2BP%28B%29=3%2F10%2B5%2F10=8%2F10=4%2F5