document.write( "Question 1203933: A delivery truck is transporting boxes of two sizes: large and small. The large boxes weigh 40 pounds each, and the small boxes weigh 25 pounds each. There are 120 boxes in all. If the truck is carrying a total of 3750 pounds in boxes, how many of each type of box is it carrying? \n" ); document.write( "

Algebra.Com's Answer #839860 by Edwin McCravy(20056) $\"\"$ $\"About$

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A delivery truck is transporting boxes of two sizes: large and small. The large
\n" ); document.write( "boxes weigh 40 pounds each, and the small boxes weigh 25 pounds each. There are
\n" ); document.write( "120 boxes in all. If the truck is carrying a total of 3750 pounds in boxes, how
\n" ); document.write( "many of each type of box is it carrying?
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document.write( "For interesting enrichment in your mathematical thinking about this problem, \r\n" );
document.write( "let's look at the \"no-algebra\" way to do it -- the only way you could have done\r\n" );
document.write( "it when you were in elementary school!  Some elementary school teachers have\r\n" );
document.write( "labeled it the \"WHAT IF?\" method. \r\n" );
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document.write( "If all 120 boxes had weighed only 25 pounds each, the truck \r\n" );
document.write( "would be carrying only (120)(25) = 3000 pounds.  So some of \r\n" );
document.write( "the 120 boxes must each weigh 40-25 = 15 pounds heavier to \r\n" );
document.write( "cause the cargo to weigh 3750-3000 = 750 pounds heavier. So \r\n" );
document.write( "there must be 750/15 = 50 large boxes, and 120-50 = 70 small \r\n" );
document.write( "boxes.\r\n" );
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document.write( "Or you could go this route instead without using algebra:\r\n" );
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document.write( "If all 120 boxes had weighed 40 pounds each, the truck would \r\n" );
document.write( "be carrying (120)(40) = 4800 pounds.  So some of the 120 \r\n" );
document.write( "boxes must each weigh 40-25 = 15 pounds lighter to cause the \r\n" );
document.write( "cargo to weigh 4800-3750 = 1050 pounds lighter.  So there \r\n" );
document.write( "must be 1050/15 = 70 small boxes, and 120-70 = 50 large boxes.\r\n" );
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document.write( "Edwin

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