document.write( "Question 1164545: A delivery truck is transporting boxes of two sizes: large and small. The combined weight of a large box and a small box is 90 pounds. The truck is transporting 60 large boxes and 65 small boxes. If the truck is carrying a total of 5550 pounds in boxes, how much does each type of box weigh? \n" ); document.write( "
Algebra.Com's Answer #788949 by ankor@dixie-net.com(22740)\"\" \"About 
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let L = weight of large boxes
\n" ); document.write( "let s = weight of small boxes
\n" ); document.write( ":
\n" ); document.write( "Just write an equation for the given statements
\n" ); document.write( ":
\n" ); document.write( "A delivery truck is transporting boxes of two sizes: large and small.
\n" ); document.write( " The combined weight of a large box and a small box is 90 pounds.
\n" ); document.write( "L + s = 90
\n" ); document.write( "we can use this form for substitution
\n" ); document.write( "L = (90-s)
\n" ); document.write( " The truck is transporting 60 large boxes and 65 small boxes.
\n" ); document.write( " If the truck is carrying a total of 5550 pounds in boxes,
\n" ); document.write( "60L + 65s = 5550
\n" ); document.write( "replace L with (90-s)
\n" ); document.write( "60(90-s) + 65s = 5550
\n" ); document.write( "5400 - 60s + 65s = 5550
\n" ); document.write( "5s = 5550 - 5400
\n" ); document.write( "5s = 150
\n" ); document.write( "s = 150/5
\n" ); document.write( "s = 30 lb is the small box
\n" ); document.write( "then
\n" ); document.write( "90 - 30 = 60 lb is the large
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\n" ); document.write( "Check this
\n" ); document.write( "60(60) + 65(30) =
\n" ); document.write( "3600 + 1950 = 5550\r
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