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Machine A and B are used to produce 660 cars. It takes [#permalink]
09 Jun 2007, 17:59
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Machine A and B are used to produce 660 cars. It takes machine A 10 hours longer to produce 660 cars then machine B. Machine B produces %10 more cars per hour then machine A. how many cars an hour does machine A produce?
Can someone please explain the non-plug in way to do this...