A certain bag contains 100 balls â€” 50 white, 25 green, 10 yellow, 7 red, and 8 purple. If a ball is to be chosen at random, what is the probability that the ball will be neither red nor purple?
Pick:
A) 0.9
B) 0.85
C) 0.6
D) 0.8
E) 0.5
According to the stem the ball can be white, green or yellow, so the probability is (white + green + yellow)/(total) = (50 + 25 + 10)/100 =85/100 = 0.85.   Answer is 0.85
<result>B</result>
A certain bag contains 100 balls â€” 50 white, 25 green, 10 yellow, 7 red, and 8 purple. If a ball is to be chosen at random, what is the probability that the ball will be neither red nor purple?