Question 149893
x=# liters
(in parentheses)=# liters
coefficient=percent


60x+12(20)=40(20+x)


Distribute
60x+240=800+40x


Subtract 240 from each side
60x=560+40x


Subtract 40x from both sides
20x=560


Divide by 20
x=28


28 liters