Due to the fact he does not know how many people are attending, you would represent the people value with a variable. Because we know he's given 8 ox. per person, you would need to write the expression as 8x.8 to represent the ox. needed and the x representing the people.
Divide 32 by 8 to see how many people he can serve,
32/8=4
By the perimeter you need to add all the sides. that' s all
B. CPI %age = 82.4 - 29.6 = 52.8 / 29.6 * 100 = 178%
0.14 * 178/100 = $0.249 / $0.25 hence answer is B