Question 1205114
x = number of standard size cars.
y = number of compact size cars.
there are two criteria that have to be satisfied.
they are:
x + y >= 25
180x + 144y <= 4600


selection A and C are not valid because 180x + 144y is not smaller than 4600.
for selection A, you have 28 * 180 = 5040.
for selection C, you have 9 * 180 + 21 * 144 = 4644.


selection B and E are not valid because x + y is not greater than 25.
for selection B, you have x + y = 20.
for selection E, you have x + y = 24.


that leave selections D and F as the only valid options.
there are greater than or equal to 25 cars and the total square space taken is less than or equal to 4600 in each of those options.