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# Imagine an assembly line with three inspection points A, B

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Manager
Joined: 25 Feb 2008
Posts: 53

Kudos [?]: 14 [0], given: 0

Imagine an assembly line with three inspection points A, B [#permalink]

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22 Mar 2008, 03:27
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Imagine an assembly line with three inspection points A, B and C. Of every 10 unites inspected at point A, 2 are discarded as faulty. Of every 10 unites inspected at point B, 1 is discarded as faulty. Of every 8 unites inspected at point C, 1 is discarded as faulty. Of every 200 unites sent along the assembly line, how many are discarded at three inspection points.
126
115
85
74
54
Optional: time you spend on this question

Kudos [?]: 14 [0], given: 0

Director
Joined: 13 Nov 2003
Posts: 788

Kudos [?]: 61 [0], given: 0

Location: BULGARIA
Re: assembly line [#permalink]

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22 Mar 2008, 04:38
Hi,
Think that the ans is : (2/10)*200+ (1/10)*160 + (1/8)*144=40+16+18=74

Kudos [?]: 61 [0], given: 0

Senior Manager
Joined: 15 Aug 2007
Posts: 252

Kudos [?]: 71 [0], given: 0

Schools: Chicago Booth
Re: assembly line [#permalink]

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22 Mar 2008, 08:07
74
200 -> A takes out 20% -> 160 -> B takes out 10% -> 144 -> C takes out 100/8% -> 126 remain on the ine. So 74 are discarded

Kudos [?]: 71 [0], given: 0

Re: assembly line   [#permalink] 22 Mar 2008, 08:07
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# Imagine an assembly line with three inspection points A, B

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