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work vic problem

by smallsorrow » Tue Sep 30, 2008 9:36 am
If it assumed that each of the n production workers in a factory assembles one instrument every t minutes, how many instruments does the factory assemble in 7.5 hoursof production?

A) 450n /t
B) 450t/n
C) 450 nt
D) 7.5tn/60
E) 7.5n/60t


Took me ages to solve this; best is to pick numbers....

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by schumi_gmat » Tue Sep 30, 2008 9:39 am
IMO A
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by vishubn » Tue Sep 30, 2008 9:42 am
IS IMO C????
vishu
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by kris610 » Tue Sep 30, 2008 9:49 am
The rate if n/t mins. Convert this to hours => 60t/n. You've the rate and the time is 7.5. Multiply to get A.
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by stop@800 » Tue Sep 30, 2008 9:51 am
7.5 hrs = 7.5*60 mins = 450 mins

1 instrument in t mins
so in 450 mins 450/t inst by 1 worker
we have n workers

so 450* n /t

ans A

Vishu you mistake is
we have 1 instrument in t minutes and not t instruments in 1 minute.
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by vishubn » Tue Sep 30, 2008 9:55 am
Vishu you mistake is
we have 1 instrument in t minutes and not t instruments in 1 minute.
Stop@800.. thanks for the correction ! yes thats the mistake i made

vishu
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