Problem $2\mathrm{.}11$ on page $78.$

$2\mathrm{.}11$ In Figure $2\mathrm{.}8$a$,$ jobs arrive at times $t=0,1,1\mathrm{.}5,3\mathrm{.}25,5\mathrm{.}25,$ and $7\mathrm{.}75.$ The corresponding

completion times are $t=2,3,3\mathrm{.}5,4\mathrm{.}25,8\mathrm{.}25,$ and $8\mathrm{.}75.$

a$.$ Determine the area of each of the six rectangles in Figure $2\mathrm{.}8$ b and sum to get the

total area $A.$ Show your work.

b$.$ Determine the area of each of the $10$ rectangles in Figure $2\mathrm{.}8$ c and sum to get the

total area $A.$ Show your work.

$($a$)$ Arrival and completion of jobs

Figure $2\mathrm{.}8$ Illustration of Little's Law