Answer:
4 glasses per day
Explanation:
Step 1: State the given
Given that Adela drinks 28 glasses of water per week
![28~glasses=1 ~week](https://img.qammunity.org/2023/formulas/mathematics/high-school/i5oqv4gcer9mvazscbro3gx3w1i6idt805.png)
Step 2: State what to be determined
To determine how many glasses of water Adela drinks per day
![x~glasses=1 ~Day](https://img.qammunity.org/2023/formulas/mathematics/high-school/q9a2d88cv4uv4pl6rcwinl9r5o6plbo4wz.png)
Step 3: State the number of days in a week
There are 7 days in a week
![7~days=1~week](https://img.qammunity.org/2023/formulas/mathematics/high-school/8n567inkgiozf78u2iuhxg6dxw80m3k12p.png)
Step 4: Calculate how many glasses of water Adela drinks per day
Knowing fully well that she drinks 28glasses in a week and 7 days make a week. Then,
![28~glasses=1 ~week\\1~week=7~days\\Therefore, 28glasses = 1 ~week](https://img.qammunity.org/2023/formulas/mathematics/high-school/8pg1pidhfwbaqjai8zfinro85oh07dk21a.png)
Divide through by 7
![(28glasses)/(7) =(7days)/(7) =4~glasses=1 ~day](https://img.qammunity.org/2023/formulas/mathematics/high-school/damz8hay0j3rvj75eybv8c8hg388xei5eh.png)
Hence, Adela drinks 4 glasses of water per day