Question

1. A time study analyst timed an assembly operation for 30 cycles, and then computed the average time per cycle, which was 18.75 minutes. The analyst assigned a performance rating of .96, and decided that an appropriate allowance was 15%. Assume the allowance factor is based on the workday. Determine the following: observed time (OT), the normal time (NT), and the standard time (ST)

Answer 1

Answer:

1. observed time = 18.75 minutes.

2. Normal time = 18 minutes

3. Standard time = 21.17 minutes

Explanation:

1. The observed time will be equal to the average time per cycle, which was given in the question as 18.75 min. Therefore, observed time = 18.75 minutes.

2. The normal time will be:

= Average Time x Performance Rating

= 18.75 x 0.96

= 18 minutes

3. The standard time will be:

= Normal time × 1/(1 - 15%)

= Normal time × 1/(1 - 0.15)

= 18 × 1/0.85

= 18 × 1.176

= 21.17 minutes