40,
since
400 x 4 + 1.6 grams. which is the closest
4 x 10 = 40
B(5 - 2, -6 + 3, -1 + 1) = B(3, -3, 0)
2(x-1)=42
2x-2=42
2x=44
X=22
B is the only rational answer.
I believe ( i am not 100% certain) that the theoretical probability would be 1/2 or 300/600 and the experimental probability is 252/600, you may need to simplify that
