document.write( "Question 97508: sand/gravel = 4/5 = 64/x \n" ); document.write( "
Algebra.Com's Answer #70931 by edjones(8007)\"\" \"About 
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Multiply x times each side. 4x/5=64
\n" ); document.write( "Multiply 5/4 times each side. x=64*5/4=80
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