Problem $6.$

A time study of an employee assembling peanut valves resulted in the following set of observations. What is the standard time, given a performance rating of $95$ percent and an allowance of $20$ percent of the total normal time?

$\backslash$table$[[\backslash$table$[[$Average time$],[($seconds$)]],$Observations$],[15,14],[20,12],[25,15]]$