Based on the rating factor of 75%, the normal time for the job element would be 11.19 seconds.
When given the rating factor, the normal time can be found as:
= Average time for the job element x Rating factor
Average time for the job factor is:
= [(10 x 18) + (15 x 25) + (20 x 17)] / (18 + 25 + 17)
= 14.92 seconds
The normal time for the job element is therefore:
= 14.92 x 0.75
= 11.19 seconds
Find out more on job element's normal time at https://brainly.com/question/19952926
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