A 19-liter mixture consists by volume of 1 part juice to 18 parts water. If x liters of juice and y liters of water are added to this mixture to make a 54-liter mixture consisting by volume of 1 part juice to 2 parts water, what is the value of x?

Answer 1

Outset:

1 liter juice + 18 liters water = 19 liters

Conclusion:

18 liters juice (54/3)

x = 18 - 1 = 17