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The standard time for an operation has been calculated as 20 min. The worker was rated at 80%. If the relaxation and other allowances were 25%, then the observed time would be
  • a)
    25 min
  • b)
    20 min
  • c)
    15.5 min
  • d)
    16 min
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The standard time for an operation has been calculated as 20 min. The ...
Standard time = Normal time + Allowances 
= (observed time x rating factor) + allowances 
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Most Upvoted Answer
The standard time for an operation has been calculated as 20 min. The ...
**Calculation of Observed Time**
The observed time for an operation can be calculated using the formula:
Observed Time = Standard Time / Worker Rating
**Given Data**
- Standard Time = 20 min
- Worker Rating = 80%
**Calculation**
Observed Time = 20 min / 0.80 = 25 min
**Calculation of Total Allowances**
Total Allowances = Observed Time * (Relaxation + Other Allowances)
Total Allowances = 25 min * 0.25 = 5 min
**Final Observed Time Calculation**
The final observed time is calculated as:
Final Observed Time = Observed Time + Total Allowances
Final Observed Time = 25 min + 5 min = 30 min
Therefore, the correct answer is **20 min (option B)**.
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