Keywords:
<em>Water, plant, water, liters, daily, milliliters, divide
</em>
For this case we must find the amount of liters of water that students used daily, for 28 days, to water a plant, knowing that they used a total of 23.8 liters of water at the end of 28 days. For this, we must divide and the result convert it to milliliters. So:
Let "x" be the number of liters of water that students used per day:
![x = \frac {23.8\ liters} {28\ days}\\x = 0.85\ liters\ per\ day.](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%20%7B23.8%5C%20liters%7D%20%7B28%5C%20days%7D%5C%5Cx%20%3D%200.85%5C%20liters%5C%20per%5C%20day.)
Thus, the students used 0.85 liters of water per day.
On the other hand, we know that: 1 liter equals 1000 milliliters. Then, by rule of three:
1 L -------------> 1000 mL
0.85L ---------->?
Where "?" represents the amount of daily water watered in milliliters
![? = \frac {0.85 * 1000} {1}\\? = 850\ mL](https://tex.z-dn.net/?f=%3F%20%3D%20%5Cfrac%20%7B0.85%20%2A%201000%7D%20%7B1%7D%5C%5C%3F%20%3D%20850%5C%20mL)
Thus, the students used 850 milliliters of water per day.
Answer:
850 milliliters of water per day.