$2.$ A work element in a manual assembly task consists of the following MTM$-1$ elements:

$(1)$ R$16$C$,(2)$ G$4$A$,(3)$ M$10$B$5,(4)$ RL$1(5)$ R$14$B$,(6)$ G$1$B$,(7)$ M$8$C$3(8)$ P$1$NSE and

$(9)$ RL$1.($a$)$ Determine the normal times in TMUs for these motion elements. $($b$)$ what

is the total time for this work element in seconds?

$3.$ Express the MTM$-1$ motion elements in problem$-2$ as one or more activity sequence

models with index numbers $($a$)$ determine the normal times in TMUs for these activity

sequence models. $($b$)$ what is the total time for this$($these$)$ activity sequence model$($s$)$ in

seconds? $($c$)$ How do the MOST normal times compare with the normal times from

MTM$-1?$