The Data Below Represent Time Study Observations for an Assembly

Multiple Choice

The data below represent time study observations for an assembly operation. Assume a 7% allowance factor. What is the normal time for element 3?
$$\begin{array} { | c | c | c | c | c | c | c | } \hline & & { \text { Observations (times in minutes) } } \\\hline \text { Element } & \text { Performance Rating } & 1 & 2 & 3 & 4 & 5 \\\hline 1 & 100 \% & 1.5 & 1.6 & 1.4 & 1.5 & 1.5 \\\hline 2 & 90 \% & 2.3 & 2.2 & 2.1 & 2.2 & 2.4 \\\hline 3 & 115 \% & 1.7 & 1.9 & 1.9 & 1.4 & 1.6 \\\hline 4 & 100 \% & 3.5 & 3.6 & 3.6 & 3.6 & 3.2 \\\hline\end{array}$$

A) 1.7 min.
B) 1.96 min.
C) 2.11 min.
D) 10.1 min.
E) 11.2 min.