document.write( "Question 358083: The diameter (y) of a tree varies directly as it's age (x). A 15 year old tree is 3.75 inches in diameter. How old will the tree be when it is 25 inches in diameter? \n" ); document.write( "
Algebra.Com's Answer #255608 by mathesther05(3)\"\" \"About 
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3.75/15=25/x
\n" ); document.write( "3.75x= 15*25
\n" ); document.write( "x=15*25/3.75
\n" ); document.write( "x=100
\n" ); document.write( "tree is 100y old
\n" ); document.write( "
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