Answer:
If you randomly pick out a marble and replace it 200 times, you can expect 50 white or gray marbles to be chosen.
Explanation:
30 + 2 + 8 = 40
white & gray = 10
10/40 = 0.25 or 25%
0.25 x 200 = 50
so they could eat a bigger prey to eat on. and if they didnt they proably wouldent survive
Formal should be the answer. It seems most appropriate.