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Re: Work problem: 12 min for one person, 18 min for another  TOPIC_SOLVED

Assume a job is x. In 12 minutes, person A does x, and in 18 minutes, person B does x too. So, we'll view it in 1 minute. In 1 minute, essentially person A does x/12 minutes and person B does x/18 minutes. So if A and B does it together they do x/12 + x/18 of work. Simplifying the denominator, we we...
by vribli
on Thu Jul 05, 2012 3:49 am
 
Forum: Beginning Algebra
Topic: Work problem: 12 min for one person, 18 min for another
Replies: 1
Views: 1169

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