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If a lathe machine manufactures screws and bolts at a constant rate

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Math Expert
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Joined: 02 Sep 2009
Posts: 59676
If a lathe machine manufactures screws and bolts at a constant rate  [#permalink]

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New post 22 Oct 2019, 00:40
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

85% (00:54) correct 15% (01:07) wrong based on 60 sessions

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If a lathe machine manufactures screws and bolts at a constant rate, how much time will it take to manufacture 1000 bolts?


(1) It takes the lathe machine 28 seconds to manufacture 20 screws.

(2) It takes the lathe machine 1.5 times more time to manufacture one bolt than to manufacture one screw.

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Joined: 25 Jan 2019
Posts: 6
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Re: If a lathe machine manufactures screws and bolts at a constant rate  [#permalink]

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New post 02 Dec 2019, 05:34
1
Option 1 gives us the manufacturing time of screws but says nothing about bolts. Rule out A and D.
Option 2 provides us relative manufacturing times for bolts and screws but no numbers. Rule out B.

Combining both the statements,
we should be able to get manufacturing time for bolts which then can be extrapolated to determine time for manufacturing 1000 bolts.

Hence Option (c)
GMAT Club Bot
Re: If a lathe machine manufactures screws and bolts at a constant rate   [#permalink] 02 Dec 2019, 05:34
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If a lathe machine manufactures screws and bolts at a constant rate

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