Consider the following constraints from a two-variable Linear Program.
(1) X ≥ 0
(2) Y ≥ 0
(3) X + Y ≤ 20
(4) 2X + 5Y ≤ 70
If constraints (3) and (4) are binding, what is the optimal solution (X, Y)?
a) (0, 20)
b) (20, 0)
c) (10, 10)
d) (0, 14)
e) (35, 0)
Answer: c