Question

Solving a work problem using a two step linear inequality

Answer 1

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:

`\begin{gathered} 19+5t>49 \\ 19+5t-19>49-19 \\ 5t>30 \\ (5t)/(5)>(30)/(5) \\ t>6 \end{gathered}`

Thus, the answer is any number of minutes greater than 6:

7,8, 9,....