$($Chapter $6)$: Two sizes of loaders are being considered, a

$1-$cy loader with a $65c\frac{y}{h}r$ production rate and a $2-$cy

loader with a $140c\frac{y}{h}r$ production rate. Diesel dump

trucks with $12-$cy capacity will be used to haul the

material. In addition to time required by the loader to

load a truck, there will be an average delay of $2$ minutes

waiting for another truck to move into position for

loading. Assume a $50-$min hour efficiency for both the

loader and the trucks. The following cost information

applies: $(12\mathrm{.}5$ Points$)$

$1-$cy loader: $$\frac{65\mathrm{.}00}{h}r$

$2-$cy loader: $$95$:$00$

$/$hr

Truck: $$\frac{45\mathrm{.}00}{h}r$

Driver: $$\frac{35\mathrm{.}00}{h}r$

Loader operator: $$\frac{40\mathrm{.}00}{h}r$

Determine which size loader is more economical based

on the cost of loading the material into the trucks