Answer:
2400 mm
Step-by-step explanation:
(80 x 60) - (60 x 40)
5c + 4f ≥ 200
c + f ≤ 60
c > 0
f > 0
Intersection of the two lines.
If $300 is 200%, half of that would be 100%. Thus, $150 is the correct answer.
