From\To

W₁

W₂

W₃

Availability a_i

S₁

10

4

11

a₁ = 14

S₂

12

5

8

a₂ = 10

S₃

9

6

7

a₃ = 6

Requirement b_j

b₁ = 8

b₂ = 10

b₃ = 12

${\displaystyle \sum _{j=1}^3{a}_i}={\displaystyle \sum _{i=1}^3{b}_j}=30$