Any number of minutes greater than 6. Example: 7, 8, 9, etc.
1) In this problem, we need to interpret that gathering the given data
2) Prospecting the data from the word question:
"Laura's fish tank has 19 liters of water in it" ---> Initial amount of water:19l
"...add 5 liters per minute" ---> 5t ("t" for we don't know the time it took)
3) So we can set the following inequality:
[tex]\begin{gathered} 19+5t>49 \\ 19+5t-19>49-19 \\ 5t>30 \\ \frac{5t}{5}>\frac{30}{5} \\ t>6 \end{gathered}[/tex]
Thus, the answer is any number of minutes greater than 6:
7,8, 9,....
