Worker transport
1 x 1 = 2
1 + 1 = 2
1 + 1 = 1
1
1
1 x 1 = 2
1 x 1 = 2
1 + 1 = 1
1 x 1
1 x 1
1 x 1
10/24 x 1 = 10/24
1/24 h
10/24 + 10/24 = 20/24
1 x 1 = 1 tandem
1 x 1 = 1 tandem
1 x 1 = 1 tandem
1 x 1 = 1 tandem
10/24 x 1 (tandem) = 10/24
10/24 x 1 (tandem) = 10/24
10/24 x 1 (tandem) = 10/24
10/24 x 1 (tandem) ??? = 18 (21)/24 ???