document.write( "Question 923639: Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 5 liters of natural oil for every 8 liters of synthetic oil. In order to make 936 liters of Petrol oil, how many liters of synthetic oil are needed? \n" ); document.write( "

Algebra.Com's Answer #560212 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
( natural oil ) / ( synthetic oil ) = $\"+5%2F8+\"$
\n" ); document.write( "Let $\"+x+\"$ = liters of synthetic oil needed
\n" ); document.write( " $\"+936+-+x+\"$ = liters of natural oil needed
\n" ); document.write( "-----------------
\n" ); document.write( " $\"+5%2F8+=+%28+936+-+x+%29+%2F+x+\"$
\n" ); document.write( "Multiply both sides by $\"+8x+\"$
\n" ); document.write( " $\"+5x+=+8%2A%28+936+-+x+%29+\"$
\n" ); document.write( " $\"+5x+=+7488+-+8x+\"$
\n" ); document.write( " $\"++13x+=+7488+\"$
\n" ); document.write( " $\"+x+=+576+\"$
\n" ); document.write( "576 liters of synthetic oil are needed
\n" ); document.write( "check:
\n" ); document.write( " $\"+5%2F8+=+%28+936+-+x+%29+%2F+x+\"$
\n" ); document.write( " $\"+5%2F8+=+%28+936+-+576+%29+%2F+576+\"$
\n" ); document.write( " $\"+5%2F8+=+360%2F576+\"$
\n" ); document.write( " $\"+.625+=+.625+\"$
\n" ); document.write( "OK
\n" ); document.write( " \n" ); document.write( "

\n" );