Question

Danny poured 78 liters of water into containers X, Y, and Z. The ratio of the volume of water in Container X to the volume of water in Container Y is 5 : 2. The ratio of the volume of water in Container Y to the volume of water in Container Z is 8 : 11. a) How much water was poured into Container X? b) How much more water was poured into Container X than Container Z?

Answer 1

Y:Z = 8:11  y=(8/11)z
X:Y = 5:2   x=(5/2)y

x+y+z=78

(8/11)z+(5/2)y+z=78
(8/11)z+(5/2)(8/11)z+z=78

now you can solve for z and then the others