As part of a time study,a particular job was analyzed.The study included 20 job cycles and the following cumulative times and performance rating factors for each element were reported: Assuming an allowance factor of 15%,the standard time for this job would be
A)4.35 minutes.
B)3.67 minutes.
C)2.712 minutes.
D)2.358 minutes.

Question

As part of a time study,a particular job was analyzed.The study included 20 job cycles and the following cumulative times and performance rating factors for each element were reported:  Assuming an allowance factor of 15%,the standard time for this job would be
A)4.35 minutes. 
B)3.67 minutes. 
C)2.712 minutes. 
D)2.358 minutes.

Quizplus · Accepted Answer

To calculate the standard time, we first need to calculate the normal time using the sum of the observed times divided by the number of cycles:

Normal time = (97.0 + 57.2 + 58.9 + 71.1 + 68.0) / 20 = 70.24 seconds

Next, we need to apply the performance rating factor to the normal time:

Adjusted time = normal time × performance rating factor / 100 = 70.24 × 105 / 100 = 73.75 seconds

Finally, we add the allowance factor of 15% to the adjusted time:

Standard time = adjusted time × (1 + allowance factor / 100) = 73.75 × 1.15 = 84.61 seconds = 1.41 minutes

Therefore, the answer is C (2.712 minutes).

As Part of a Time Study,a Particular Job Was Analyzed