document.write( "Question 82984This question is from textbook introductory algebra
\n" ); document.write( ": one printing press can print the first edition of a book in 55 mins, whereas a second printing press requires 66 min to print the same number of copies. how long would it take to print the first edition with both presses operating? \n" ); document.write( "

Algebra.Com's Answer #59561 by checkley75(3666) $\"\"$ $\"About$

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55*66/(55+66)
\n" ); document.write( "3630/121=30 minutes to print the book together. \n" ); document.write( "

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