(a) Solve the following problem graphically:

(a) Solve the following problem graphically:
Min C = 0.6×1 + x2
Sub to 10 x1 + 4 x2 ≥20
5 x1 + 5 x2 ≥20
2 x1 + 6 x2 ≥12
x1 , and x2 ≥0

(b) Why does the solution occur at a corner point only? Give reasons.
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