document.write( "Question 774686: A worker can assemble 3 shelf units each hour. During the fifth hour of the shift, there were 115 shelf units in the warehouse. How many units were assembled before the shift started? \n" ); document.write( "
Algebra.Com's Answer #472378 by josmiceli(19441)\"\" \"About 
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( 3 shelf units ) / ( hour ) x ( 5 hours ) = 15 shelf units
\n" ); document.write( "\"+115+-+15+=+100+\"
\n" ); document.write( "100 units were assembled before the shift started
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