$>$ Demand $=78,000$ units$/$year

$>$ Ordering cost $=$$$\frac{38\mathrm{.}00}{?}$ order

$>$ Holding cost $=$$$\frac{3\mathrm{.}00}{?}$ unitlyear

$>$ Average lead time $=4$ weeks

$>$ Standard deviation of weekly demand $=120$ units

a$.$ The economic order quantity for this item is $$ units. $($Enter your response rounded to the nearest whole number.$)$

b$.$ If Petromax wants to provide a $92\%$ service level, the safety stock is $$ units $($enter your response rounded to the nearest whole number$)$ and the reorder point is $$ units $($enter your response rounded to the nearest whole number$).$