Question $3(10$ points$)$

LIsten

The City of Atlanta $($population $498,720-2020$ census$)$ has requested your assistance in evaluating its solid waste collection system. The City of Atlanta collection data are as follows:

Average truck capacity $=15m^3$; Average observed compaction ratio $=2\mathrm{.}87$

Crew size $=2$; Number of pickups $=\frac{1}{?}$ wk $($no rear$-$of$-$house service$)$

Average number of cans per stop $=\frac{2\mathrm{.}63}{w}k$ at $0\mathrm{.}1136\frac{m^3}{?}$ can

Average number of residents per stop $=5$

Average uncompacted density $=105\mathrm{.}76k\frac{g}{m^3}$

Average transport time to disposal site including delays and dumping $=1\mathrm{.}78\frac{h}{?}$ trip

Average number of trips to disposal site $=2\sqrt[\phantom{2}]{r}$; Rest breaks $=2$ at $28\mathrm{.}0$min

Average maintenance downtime $=37\mathrm{.}0mi\frac{n}{d}$; Average workday $=8\mathrm{.}00h$

Average percent of trucks out of service for major repairs $=12\mathrm{.}0\%$

Determine the minimum number of trucks the city must own.

$118$

$65$

$97$

$79$