Question 564656
------------------------percent	----------------	quantity								
Antifreeze type I	15----------------70	gallons					
Antifreeze type II	60----------------x	gallons					
Mixture	50----------------70+x	gallons					
											
15*70+60x=50(70+x)
1050+60x=3500+50x			
60x-50x=3500-1050				
10x=2450								
/	10										
x=	245	gallons	of 	Antifreeze type II							
											
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