Answer:
205 litres
Step-by-step explanation:
The expression that gives the volume of water in Eduardo's pool (in liters) is:
[tex]100 + 20m[/tex]
where m is time, in minutes
After [tex]5\frac{1}{4}[/tex] minutes ([tex]\frac{21}{4}[/tex] minutes), the volume is will be:
[tex]100 + (20 * \frac{21}{4} )\\\\\\100 + (5 * 21)\\\\\\100 + 105[/tex]
= 205 litres
The volume of water in the poll will be 205 litres.
