month, or $$0\mathrm{.}36$ per year; and annual fuel usage is $120,000$ gallons. MBC buses operate $300$ days a year.

$($a$)$ What is the optimal order quantity for MBC$?$

$($b$)$ How frequently should MBC order to replenish the gasoline supply?

$$ pel

$($c$)$ The MBC storage tanks have a capacity of $12,500$ gallons. Should MBC consider expanding the capacity of its storage tanks?

The maximum inventory is

$.$ MBC

to expand its storage tanks.

$($d$)$ What is the reorder point $($in gallons$)?$

gallons