Nine observations from a work measurement study using continuous timing are shown below. Allowances are determined as: personal, five percent; fatigue, seven percent; delay, five percent. Determine the standard time for this operation.

Work Observation

Element $123456789$ Performance Rating

A $0\mathrm{.}110\mathrm{.}140\mathrm{.}090\mathrm{.}080\mathrm{.}120\mathrm{.}110\mathrm{.}150\mathrm{.}140\mathrm{.}15115\%$

B $0\mathrm{.}240\mathrm{.}210\mathrm{.}230\mathrm{.}230\mathrm{.}270\mathrm{.}220\mathrm{.}270\mathrm{.}250\mathrm{.}25100\%$

C $0\mathrm{.}470\mathrm{.}500\mathrm{.}470\mathrm{.}440\mathrm{.}480\mathrm{.}480\mathrm{.}500\mathrm{.}470\mathrm{.}5095\%$

D $0\mathrm{.}640\mathrm{.}670\mathrm{.}650\mathrm{.}620\mathrm{.}690\mathrm{.}700\mathrm{.}700\mathrm{.}670\mathrm{.}7290\%$

E $0\mathrm{.}730\mathrm{.}740\mathrm{.}750\mathrm{.}710\mathrm{.}810\mathrm{.}830\mathrm{.}770\mathrm{.}810\mathrm{.}82105\%$

F $1\mathrm{.}021\mathrm{.}031\mathrm{.}001\mathrm{.}021\mathrm{.}081\mathrm{.}101\mathrm{.}031\mathrm{.}081\mathrm{.}11100\%$