prealgebra
posted by Bob .
a bag contains 5 green marbles 2 white marbles 8 blue marbles 9 red marbles and 6 black marbles what is the probability of drawing a white marble replacing it and then drawing a green marble? Answer choices A 1/6 B 1/15 C 1/87 D 1/90 I think its D, but I am not sure and how did you do this question

Pr(w,g)=2/30*5/30=1/15*1/6=1/90 You think correctly.

2/30*5/29
10/870
1/87