Four trucks, $1,2,3,$ and $4$ are waiting on a loading dock at ABC Company that has only a single service bay. The trucks are labeled in the order that they arrived at the dock. Assume the current time is $1$:$00$ PM$.$ The times required to unload each truck and the times that the goods they contain are due in the plant are given in the following table.

TruckUnloading Time $($minute$)$Time Material is Due$1201$:$25$ PM$2141$:$45$ PM$3351$:$50$ PM$4101$:$30$ PM

Using the shortest processing time $($SPT$)$ rule, determine the schedule and complete the following:

Instruction: Enter all your answer with $2$ decimal places, unless otherwise noted. Four trucks, $1,2,3,$ and $4$ are waiting on a loading dock at ABC Company that has only a single service bay. The trucks are labeled in the order that they arrived at the dock. Assume the current time is $1$:$00$ PM$.$ The times required to unload each truck and the times that the goods they contain are due in the plant are given in the following table.

Using the shortest processing time $($SPT$)$ rule, determine the schedule and complete the following:

Instruction: Enter all your answer with $2$ decimal places, unless otherwise noted.

$1.$ The mean flow time is

$2.$ The average tardiness is

$3.$ The number of tardy trucks is

$4.$ The flow time for Truck $3$ is

$5.$ The first truck to be unload is Truck No$.$ integer$)$

$6.$ The last truck to be unloaded is Truck No$.$ integer$)$

minutes.

minutes.

$.($Enter

$.($Enter

$7.$ The completion time for Truck $1$ is

PM$.($Enter as

$\backslash (\backslash$mathrm$\{$X$\}$: $\backslash$mathrm$\{$XX$\}\backslash ),$ use $12-$hour format$)$