Assume the following information about firm XYZ$.$

Annual days of operations: $360$ days.

Annual sales $ $2,500,000$

Markup: $15\%$

All operational capital is borrowed @ $40\%$ annual interest.

$1($a$)$ Beginning of the year inventory is worth $$250,000$ and end$-$of$-$the$-$year inventory $$300,000.$

$($i$)$ One average how long does it take to sell a piece of inventory?

$($ii$)$ Assuming that all sale is cash, what is the annual ROR net of bank interest?

$1($b$)$ Assume $40\%$ of total sale is on credit. Beginning$-$of$-$the$-$year accounts receivable is worth $$68,000$ and end$-$of$-$the$-$year accounts receivable $$72,000.$

$($iii$)$ One average how long does it take to cash a credit sale?

$($iv$)$ Assuming that all $40\%$ sale is on credit and $60\%$ is cash sale, what is the annual ROR net of bank interest?

$1($c$)$ Assume that $100\%$ of the COGS is materials purchase. Average accounts payable is $$155,280\mathrm{.}00.$

$($v$)$ On average how long does XYZ take to pay bills to its vendors.

$($vi$)$ Assuming JIT supply coordination by its vendors to synchronize with inventory requirements as frequently as stipulated by the ITR, what is the annual ROR net of bank interest? For this part you still assume $40\%$ sale is on credit and $60\%$ is cash sale.

Bonus

Do part $1($c$)$ all over again assuming that, $75\%$ of the COGS is materials purchase; the rest is wages of the workers and other costs incurred inhouse. Average accounts payable is $$116,460\mathrm{.}00.$