Given the following information for Tiger Company:

$\backslash$table$[[$Cash$,100,000,$Accounts payable,$50,000],[$Accounts receivable,$200,000,$Notes payable,$150,000],[$Inventories$,200,000,$Accruals,$50,000],[$Net fixed assets,$500,000,$Long$-$term debts,$400,000],[,,$Common stock,$100,000],[,,$Retained earnings,$250,000]]$

a$.$ What is the total working capital?

b$.$ What is the net working capital?