A time study of an assembly task yielded the following observations for a task for which the

analyst gave a performance rating of $1\mathrm{.}13$ using allowance of $20$ percent of task time, determine

the standard time for this task.

$$

Observation

Time, $($minutes$)$

$1....................................1\mathrm{.}12$

$2....................................1\mathrm{.}12$

$3....................................1\mathrm{.}16$

$4....................................1\mathrm{.}12$

$5....................................1\mathrm{.}15$

$6....................................1\mathrm{.}18$

$7....................................1\mathrm{.}14$

$8....................................1\mathrm{.}14$

$9....................................1\mathrm{.}19$

Total $10\mathrm{.}35$