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Hi there,
Sorry i realise i’ve asked quite a few questions but i think you will find this one of particular interest…
I’m working through the BPP revision kit (again!) and i’m on question number 92 – Yam Co.
The question asks “what is the maximum capacity output per year for the bottleneck’s “pressing” for each product.”
The answer i have is:
A: 225,000 hours x (not divide) 0.50 (metres per hour) = 112,500
B: 225,000 hours x (not divide) 0.50 (metres per hour) = 112,500
C: 225,000 hours x 0.40 = 90,000However the answers to the revision kit are using division which doesn’t appear correct. If there is 0.50 metres processed every hour, them 1 metre will take 2 hours. And so 100,000 metres will take 200,000 hours and therefore it will be 112,500 metres for 225,000 hours. The revision kit though calculates it as 450,000 metres.
Could someone please clarify this?
Thank you.
EllisThe total proc time of each factory is 18 * 5 *50 = 225,000 hrs
So the prod capacity for pressing must be 225,000/0.5 hr per m = 450,000 metres
The bottleneck is clearly pressing
a b c
Press 450,000 450,000 562,500
Stret 900,000 562,500 900,000
Roll 562,500 900,000 900,000(225,000 / 0.5 = 450,000)
(225,000 / 0.25 = 900,000)
(225,000 / 0.4 = 562,500)I still don’t completely follow. The only way i can see where i’ve gone wrong is where it says
Processing time per metre in hours:
Product A: 0.50 Product B: 0.50 Product C: 0.40And i have assumed this to be 0.50 metres pressed (on e.g product A) per hour, and instead it means 0.5 (30 mins) for every metre pressed.
That’s the only way i can see where i’m going wrong.
I’m also not sure how you worked out the stats for Rolling & Stretching when the data isn’t available?
Thanks
Oh, i see where you’re referring to. You’ve got the more ‘complete’ version from the lecture notes on page 19 which incidentally i have just come across.
Looking at it like this, i think i had misinterpreted it as ‘metres per hour’ and should have understood it at ‘hours per metre’
Is that correct?
Thanks!
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