$($a$)$ Determine the total costs of printing $20,000$ and $50,000$ photos per month.

Units Current Process Proposed Process

$20,000$ Answer $1$

$11000$

Answer $2$

$12800$

$50,000$ Answer $3$

$17000$

Answer $4$

$14000$

$($b$)$ Determine the monthly volume at which the proposed process becomes preferable to $($cost less than$)$ the current process.

Volume greater than Answer $5$

$0$

units