Question $30(1$ point$)$

A service garage uses $120$ boxes of cleaning cloths a year. The boxes cost $$6$ each. Ordering cost is $$3$ and holding cost is $10$ percent of purchase cost per unit on an annual basis. Determine:

$($i$)$ The economic order quantity

$($ii$)$ The total cost of carrying the cloths $($excluding purchase price$)$

$35$ and $$20\mathrm{.}79$

$30$ and $$25\mathrm{.}68$

$31$ and $$21\mathrm{.}79$

$32$ and $$22\mathrm{.}86$