ANSWER
12
EXPLANATION
Considering that 1 cup holds 250 mL of liquid, which is equivalent to,
[tex]1cup=250mL=0.25L[/tex]
The bottle holds 3 liters of water, which is equivalent to,
[tex]3L\cdot\frac{1cup}{0.25L}=12cups[/tex]
Hence, the bottle holds 12 cups of water.
