document.write( "Question 840609: Dave is 6 feet tall and he cast a shadow of 8 feet. A tree he wants to cut down casts a shadow of 75 feet. How tall is the tree ? \n" ); document.write( "
Algebra.Com's Answer #506348 by LinnW(1048)\"\" \"About 
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\"6%2F8+=+75%2Fx\" where x is the height of the tree
\n" ); document.write( "do cross products
\n" ); document.write( "6x = 8*75
\n" ); document.write( "6x = 600
\n" ); document.write( "x =100 ft
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