Question 424948
	        percent	----------------quantity	
Acid solution A	10	----------------x	liters
Acid solution B	50	----------------200-x	liters
Total	20.00%	----------------	200			
..............
10x+50(200-x)=20*200
10x+10000-50x=4000		
10x-50x	=4000-10000		
-40x=-6000							
/-40									
x=150	liters	10.00%		

50 liters 50.00%