document.write( "Question 885121: It is necessary to have a 40% antifreeze solution in the radiator of a certain car. The radiator now has 70 liters of 20% solution. How many liters of this should be drained and replaced with 100% antifreeze to get the desired strength? \n" ); document.write( "
Algebra.Com's Answer #534933 by josgarithmetic(39618)\"\" \"About 
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