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LEX K.

asked • 07/19/16

11 qt radiator is currently full of 30% anti-freeze. It is supposed to be 50%. How much should he drain out and replace with 100%.. continued below

Full story problem.. Bob's 11-quart radiator is currently full of 30% anti-freeze. It is supposed to be 50%. How much should he drain out and replace with 100% anti-freeze to have a full radiator that is 50% antifreeze? 
 
 
 
Desperately need help with this mixture problem, all the numbers confused me, how would one set this up to get the equation and the correct answer? 

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