A job consists of three elements. Fifteen observations for each element were timed, and the resulting data are shown in the following table. A performance rating factor $($RF$)$ has also been assigned for each element, as shown in the table. The job has an allowance of $10\%$ of normal time.

$\backslash$table$[[$Element$,$Performance Rating $(\%),\backslash$table$[[$Average Element Time $($in$],[$minutes$)]]],[$#$1,80,4],[$#$2,90,6],[$#$3,105,3]]$

Use the information in the scenario. What is the normal time for the entire job?

less than $12\mathrm{.}0$ minutes but greater than or equal to $10$ minutes

less than $10$ minutes but greater than or equal to $8\mathrm{.}0$ minutes

greater than or equal to $12\mathrm{.}0$ minutes