$3\mathrm{.}4$ Suppose each customer puts out $0\mathrm{.}25$ m$3$ of waste each week. Packer

trucks with a compaction ratio of $4$ take $0\mathrm{.}4$ minutes per customer to collect the waste.

Two trucks are being considered: one that makes two trips per day to the disposal

site, and another that makes three.

Trips per day to disposal site $23$

Truck volume $($m$3)2715$

Annualized truck cost $($$$/$yr$)120,00070,000$

Time driving, unloading, breaks $($min$/$day$)160215$

$($a$)$ Operating five days per week, with once$-$per$-$week pick$-$up$,$ how many customers

would each truck service?

$($b$)$ How many hours per day would each truck and crew have to operate to fill the

trucks each day?

$($c$)$ With the cost of crew being $$40$ per hour, what is the total annual cost of trucks

and crew for each system? From that, find the annual cost per customer. Which

system is less expensive?

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