what am i doing wrong? pls give step by step solver in excel i will thumbs up if helpful. i have attached my work. the final answer should be Minimum total daily cost: $$1963\mathrm{.}82$

Optimal flows from wells to pumps $($x$[$i$,$j$])$:

W$1->$ A: $93\mathrm{.}00$ TBD

W$2->$ B: $86\mathrm{.}00$ TBD

W$3->$ A: $28\mathrm{.}00$ TBD

W$3->$ C: $67\mathrm{.}00$ TBD

Optimal flows from pumps to refineries $($y$[$j$,$r$])$:

A $->$ R$1$: $30\mathrm{.}00$ TBD

A $->$ R$4$: $91\mathrm{.}00$ TBD

B $->$ R$2$: $57\mathrm{.}00$ TBD

B $->$ R$3$: $29\mathrm{.}00$ TBD

C $->$ R$3$: $19\mathrm{.}00$ TBD

C $->$ R$5$: $48\mathrm{.}00$ TBD

Wells used to capacity:

W$1$ is fully used $(93$ TBD$).$

W$3$ is fully used $(95$ TBD$).$