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ELYAC Realty
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Location: Los Angeles CA
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pepeprepa
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 Posted: Sat Aug 30, 2008 3:03 am Post subject: |
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I don't see more formula perhaps except.
Rate=Work/Time
They tell you:
A: time to make the job for one of the ten machine.
10/A=1/16
A=160
So it takes 160h for only one machine to finish the task.
Only 8 machines give you:
8*(1/160)=1/20
So it takes 20hours.
I feel I explain poorly, find other work problem on the forum it will help you.
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kshankker
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Test Date: Sept. 25th, 2008
Target GMAT Score: 700
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| Posted: Sat Aug 30, 2008 6:05 am Post subject: |
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formula is same......Amount= rate * time...
10 machines =16 hr.
for 8 machines = X hr.
so ... M1 * T1= M2 * T2
T2 = (M1*T1)/ M1
= 10*16 / 8
= 20....
Got it !!!!
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