Question

Ashley's fish tank has 15 liters of water in it. She plans to add 4 liters per minute until the tank has at least 59 liters. What are the possible numbers of minutes Ashley could add water?User for the number of minutes.Write your answer as an inequality solved for t.

Answer 1

We have the next given information:

-Ashley's fish tank has 15 liters of water in it.

- She plans to add 4 liters per minute until the tank has at least 59 liters

We can write at least using the inequality symbol for greater than or equal to "≥".

Now, we can write the next inequality:

`\begin{gathered} 4t+15≥59 \\ \end{gathered}`

Where the t is the dependent variable, and it depends on the liter per minute.

we add 15 because the tank has already 15 liters of water in it.

Solve for t:

`\begin{gathered} 4t≥59-15 \\ 4t≥44 \\ t≥(44)/(4) \\ t≥11 \end{gathered}`

So Ashley could add water for at least 11 minutes.

The inequality answer is t≥11.