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Dear John,
How are you?
I hope you are doing well and safe.Q-The fastest time in which a batch of 20 “spicy meat special” sandwiches has been made was 32 minutes, with no hold-ups. However, work studies have shown that, on average, about 8% of the sandwiches makers time is non-productive.
Required,
what is the attainable standard time of one sandwich?
*The answer as per Kaplan book
Ideal time 32 minutes
plus non-productive time 2.8 non – productive idle time
so total attainable time required = 34.8 minute.*My answer
Ideal time 32 minutes
Plus non-productive time (32 ideal time * 8%)=2.56
so the total attainable time required =32 minutes + 2.56 minutes = 34.56 Minutes.1-Could you tell me why my non-productive time calculation is wrong?
2- when should I do use his way of work-out and when should I do use my way of work-out of calculating non-productive time because I am very confused?
Thank you in advance.For every 100 hours paid to the sandwich makers, 8 hours are non-productive and therefore only 92 hours are productive.
Putting it the other way round, for every 92 productive hours they need to pay for 100 hours.
So for 32 minutes of productive time they need to pay for 100/92 x 32 = 34.8 minutes
(I do explain this in my free lectures).
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