Answer:
1 liter 500 mililiters
Step-by-step explanation:
Step one:
Give data
On Saturday, we are told that Billy drank 2liters 755milliters of water
that is 2.755 liters
Let the amount of water Billy drank on Sunday be x
We are told that in all, Billy drank 4 liters 255 v
that is 4.255 liters
Hence, Saturday and Sunday combined
2.755+x=4.255
solve for x
x= 4.255-2.755
x=1.5liter
that is 1 liter 500 milliters