b$)$

BDA $40703$

A direct time study was conducted at an assembly line which has a $12-$hour operation per day. The operation is divided into five work elements: A$,$ B$,$ C$,$ D and $E$ as shown in Table Q$2\mathrm{.}2.$ Elements $C$ and $E$ were done on fully automatic machines, while other elements are manually done. Operators A and B were rated $15\%$ lower than normal, while Operator D was $10\%$ higher than normal. The company allocates a $16\%$ total allowance. Analyse the data and propose an appropriate standard time $($min$/$unit$)$ for the overall assembly process.

$(6$ marks$)$

Table Q$2\mathrm{.}2$ Direct time study data

$\backslash$table$[[$Job Element,$\backslash$table$[[$Average Process Time$],[($minutes$)]]],[$A$,25],[$B$,6\mathrm{.}5],[$D$,13],[$E$,4]]$