document.write( "Question 888298: how much water should be added to 300 litres of a solution so that its concentration may change from 25% to 20%? \n" ); document.write( "
Algebra.Com's Answer #537267 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
from the point of view of water
\n" ); document.write( "300*.75+x=(300+x)*(.80)
\n" ); document.write( "x=75
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