document.write( "Question 943900: A 5 litre bottle of liquid fertiliser needs to be diluted in the ratio of 5parts water to 2 parts fertiliser. How many litres of water needed to dilute the 5 litres? \n" ); document.write( "

Algebra.Com's Answer #575509 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
( water ) / ( fertilizer ) = $\"+5%2F2+\"$
\n" ); document.write( "( water + fertilizer ) = 5 litres
\n" ); document.write( "( fertilizer ) = ( 5 - water ) litres
\n" ); document.write( "--------------------------
\n" ); document.write( "Let $\"+w+\"$ = litres of water needed
\n" ); document.write( " $\"+w+%2F+%28+5+-+w+%29+=+5%2F2+\"$
\n" ); document.write( " $\"+w+=+%28+5%2F2+%29%2A%28+5+-+w+%29+\"$
\n" ); document.write( " $\"+2w+=+5%2A%28+5+-+w+%29+\"$
\n" ); document.write( " $\"+2w+=+25+-+5w+\"$
\n" ); document.write( " $\"+7w+=+25+\"$
\n" ); document.write( " $\"+w+=+3.571+\"$
\n" ); document.write( "3.571 litres of water are needed
\n" ); document.write( "-----------
\n" ); document.write( "check:
\n" ); document.write( " $\"+w+%2F+%28+5+-+w+%29+=+5%2F2+\"$
\n" ); document.write( " $\"+3.571+%2F+%28+5+-+3.571+%29+=+5%2F2+\"$
\n" ); document.write( " $\"+3.571+%2F+1.429+=+5%2F2+\"$
\n" ); document.write( " $\"+2%2A3.571+=+5%2A1.429+\"$
\n" ); document.write( " $\"+7.142+=+7.145+\"$
\n" ); document.write( "OK
\n" ); document.write( "error due to rounding off, I think
\n" ); document.write( "also:
\n" ); document.write( "( fertilizer + water ) = 5 liters
\n" ); document.write( " $\"+%28+5+-+w+%29+%2B+w++=+5+\"$
\n" ); document.write( " $\"+1.429+%2B+3.571+=+5+\"$
\n" ); document.write( " $\"+5+=+5+\"$
\n" ); document.write( "OK\r
\n" ); document.write( "
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