Borges Machine Shop, Inc., has a $1-$year contract for the production of $225,000$ gear housings for a new off$-$road vehicle.

Owner Luis Borges hopes the contract will be extended and the volume increased next year. Borges has developed costs

for three alternatives. They are general$-$purpose equipment $($GPE$),$ flexible manufacturing system $($FMS$),$ and expensive,

but efficient, dedicated machine $($DM$).$ The cost data follow:

The option GPE is best when the contracted volume is below

units $($enter your response as a whole number$).$

The option FMS is best when the contracted volume is between and units $($enter your responses as

whole numbers$).$