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by divya23 » Thu Jun 09, 2011 8:56 am
a produces 9000 pencils /hr
b 7000 p/h
2 mst produce 100000 pencils and each can operate for max 8 hrs find least time for machine b

[spoiler]ans = 4[/spoiler]
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by cans » Thu Jun 09, 2011 9:00 am
A-9000 p/hr
B-7000p/hr
let A works for a hours and B for b hours
then 9000a + 7000b = 100000
9a+7b=100
a max=8
thus to minimize b, maximize a
72 + 7b = 100
b= 4 hours
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by [email protected] » Sun Jun 12, 2011 1:29 am
Good Tricky sum man!!!!!1
IT IS TIME TO BEAT THE GMAT

LEARNING, APPLICATION AND TIMING IS THE FACT OF GMAT AND LIFE AS WELL... KEEP PLAYING!!!

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