The Owner of Kat Motel Wants to Develop a Time

Multiple Choice

The owner of Kat Motel wants to develop a time standard for the task of cleaning a cat cage. In a preliminary study, she observed one of her workers perform this task six times, with the following results: $$\begin{array} { l r r r r r r } \text { Observation } & 1 & 2 & 3 & 4 & 5 & 6 \\\hline \text { Time (seconds) } & 99 & 87 & 90 & 81 & 93 & 90\end{array}$$ What is the standard time for this task if the employee worked at a 50 percent faster pace than average, and an allowance of 10 percent of the workday is used?

A) 90 seconds
B) 99 seconds
C) 100 seconds
D) 168.8 seconds
E) 150 seconds