At the u-pack shipping, the workers can unload 24 trucks in 8 hours. which of the following is a correct unit rate for this situation?

1 over 3. of a truck per hour
1 over 3. of an hour per truck
3 hours per truck
1 truck per hour

Make an proportion 24 trucks/8 hours = ? trucks/1 hour, which the answer is 24/8 = 3, so three trucks an hour, but that doesn't seem to be a choice hmm

B) 1 over 3 of an hour per truck as 24:8. (Both are factor of 8) 3:1

a. Exactly two people will agree 
n = 5, p = 0.40
P(2 people) = 5!/((5–2)!2!)•(0.4)^2(1– 0.4)^(5–2)
                    = [5!/(3!2!)]•(0.4)^2(0.6)^3
                    = 0.346
b. At most three people will agree.
P(X) = 0.078 + 0.259 + 0.346 + 0.230
        = 0.913

c. At least two people will agree.
X= 2, 3, 4,
or
5 people P(X) = 0.346 + 0.230 + 0.077 + 0.01
                       = 0.663

d. Fewer than three people will agree.
X= 0, 1, or 2
people P(X) = 0.078 + 0.259 + 0.346
                    = 0.683