document.write( "Question 1015840: machine A & B always operate independently and at their respective constant rates. when working alone, machine A can fill a production lot in 5hours, and machine B can fill the same lot in X hours. When the two machines operate simultaneously to fill the production lot, it takes them 2hours to complete the job.. what is the value oF X?. \n" ); document.write( "
Algebra.Com's Answer #632230 by FrankM(1040)\"\" \"About 
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Machine A fills .2 lots/hr Machine B fills 1/X lots per hour.\r
\n" ); document.write( "\n" ); document.write( ".2+(1/X) lots per hour total. \r
\n" ); document.write( "\n" ); document.write( "If together they fill .5 lots per hour, then .5-.2=.3 \r
\n" ); document.write( "\n" ); document.write( "so 1/X = .3 or 3 1/3 hours per lot.
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