Answer:
[tex]\dfrac{30x}{24}>\dfrac{450}{24}[/tex]
Step-by-step explanation:
We are given the following in the question:
Let x be the total number of sparkling cans of water used in a day.
The family uses more than 15 cans each day so inequality becomes,
[tex]x > 15[/tex]
Number of cans in 30 days
[tex]30x > 450[/tex]
The family buys case of water with 24 cans in each case.
Number of cans used in a day is more than 15, so approx number of cans used in 30 days will be =
[tex]\dfrac{30x}{24}>\dfrac{450}{24}\\\\\Rightarrow \dfrac{30x}{24}>\dfrac{450}{24} = 18.75 \approx 19\\\\\text{Number of cases} > 19[/tex]
Thus, the family buys around 19 cases or more of sparkling water in 30 days.