Question 412225
percent	----------------quantity
40.00%	solution-------------x
70.00%	solution------------12-	x
Total	50.00%	------------12		


4000x+7000(12-x)=5000*12
4000x+84000-7000x=60000		
4000x-7000x=60000-84000		
-3000x=-24000							
/-3000											
x=8 liters---- 70%
Balance 4 liters 40%