document.write( "Question 607254: A college bookstore ordered six boxes of red pens. The store sold 39 red pens last eek and 42 red pens this week. 9 pens were left on the shelf. How many pens were in each box? \n" ); document.write( "
Algebra.Com's Answer #382539 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A college bookstore ordered six boxes of red pens. The store sold 39 red pens last eek and 42 red pens this week. 9 pens were left on the shelf. How many pens were in each box? \n" ); document.write( "------ \n" ); document.write( "Let # in each box be \"x\": \n" ); document.write( "Equation: \n" ); document.write( "6x - 39-42 = 9 \n" ); document.write( "6x -81 = 9 \n" ); document.write( "6x = 90 \n" ); document.write( "x = 15 (# of pens in each box) \n" ); document.write( "================================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "=================== \n" ); document.write( " |