Final answer:
The standard time for the job is calculated using the provided normal time, performance rating, and given allowance. By adjusting the normal time with the performance rating and adding the allowance time, we find that the standard time for this job is 12 minutes.
Step-by-step explanation:
To calculate the standard time for a job, we utilize the job's normal time, the performance rating, and the allowance given for the job. The formula to find the standard time (ST) is:
ST = Normal Time × Performance Rating + Allowance
The normal time is the time it would take an average worker to complete a task without interruptions, delays, or inefficiencies, which, in this case, is 12 minutes. The performance rating reflects the worker's performance relative to the standard or average (1.0). Here, a performance rating of 0.80 means the worker is performing at 80% of the normal pace. Finally, the allowance is an addition to the calculated time, allowing for breaks, fatigue, and other interruptions. The allowance is typically expressed as a percentage of the job time. In this case, the allowance is 20 percent of the job time.
Let's calculate the standard time:
1. Calculate the normal adjusted time by multiplying the normal time by the performance rating: 12 minutes × 0.80 = 9.6 minutes.
2. Calculate the allowance time by taking 20 percent of the normal time: 12 minutes × 0.20 = 2.4 minutes.
3. Add both to get the standard time: 9.6 minutes + 2.4 minutes = 12 minutes.
Therefore, the standard time for this job is 12 minutes.