Question 500815
At full production, a car rolls of the assembly line every 2/3 hour. At this rate, how long does it take to produce 30 cars?

30/1 / 2/3 broke it down to 10/1 x 2/1 =20? 
Is this correct?
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20 hours is correct.
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Typically, cars roll off assembly lines about one per minute, not 40 minutes.