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# ratio problem

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Intern
Joined: 14 Jan 2009
Posts: 13
Schools: Texas, Foster (washington) UNC
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Kudos [?]: 0 [0], given: 9

ratio problem [#permalink]  26 Feb 2009, 21:30
I'm not understanding the question....what does it mean "the shipments combined?"

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Senior Manager
Joined: 08 Jan 2009
Posts: 332
Followers: 2

Kudos [?]: 66 [1] , given: 5

Re: ratio problem [#permalink]  26 Feb 2009, 22:33
1
KUDOS
keeshafey wrote:
I'm not understanding the question....what does it mean "the shipments combined?"

It means on future shipment ( Defective chips)/ ( Total no of chips) = S1=S2=S3=S4.

so x/60,000 = 2/5000 = 5/12000 = 6/18,000= 4/16,000.

Solve for X and you will get x=20.

Hope so you got it.
Manager
Joined: 10 Jan 2009
Posts: 111
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Kudos [?]: 142 [1] , given: 0

Re: ratio problem [#permalink]  26 Feb 2009, 22:34
1
KUDOS
Hi keeshafey,

What it's trying to say is that in future shipments,

(The number of defective chips) / (Total chips) = {Defective chips (S1 + S2 + S3+ S4)} / {Total Chips (S1 + S2 + S3+ S4)}

R.H.S = (2+5+6+4)/(5000 + 12000 + 18000 + 16000)
= 17/51000

On L.H.S side, you are given that (Total chips) = 60000

Therefore, (The number of defective chips) = 20

Regards,
Technext
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Re: ratio problem   [#permalink] 26 Feb 2009, 22:34
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